Name: Katarzyna Piter
Country: Poland
Birthdate: 16.02.91, 33 years
WTA ranking: 830
TOP ranking's position: 95 (26.05.14, 64800 points)
Points: 29
Prize money: 756357 $
Matches total: 739
Win: 410
%: 55.48 %
Country: Poland
Birthdate: 16.02.91, 33 years
WTA ranking: 830
TOP ranking's position: 95 (26.05.14, 64800 points)
Points: 29
Prize money: 756357 $
Matches total: 739
Win: 410
%: 55.48 %
| year | summary | Hard | Clay | I. hard | Carpet | Grass | Acrylic |
| 2022 | 0/1 | 0/1 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2021 | 1/6 | 0/2 | 0/2 | 0/1 | 0/0 | 1/1 | 0/0 |
| 2020 | 18/12 | 4/3 | 14/8 | 0/0 | 0/1 | 0/0 | 0/0 |
| 2019 | 25/22 | 0/1 | 17/14 | 8/6 | 0/1 | 0/0 | 0/0 |
| 2018 | 40/35 | 4/5 | 18/13 | 13/10 | 4/6 | 1/1 | 0/0 |
| 2017 | 21/27 | 0/3 | 12/18 | 5/4 | 4/2 | 0/0 | 0/0 |
| 2016 | 33/34 | 17/16 | 15/16 | 1/2 | 0/0 | 0/0 | 0/0 |
| 2015 | 28/27 | 9/10 | 15/15 | 1/1 | 3/1 | 0/0 | 0/0 |
| 2014 | 18/29 | 8/11 | 5/8 | 5/8 | 0/0 | 0/2 | 0/0 |
| 2013 | 53/23 | 14/6 | 26/12 | 13/5 | 0/0 | 0/0 | 0/0 |
| 2012 | 49/25 | 0/0 | 29/16 | 16/8 | 4/1 | 0/0 | 0/0 |
| 2011 | 25/25 | 3/2 | 16/18 | 6/5 | 0/0 | 0/0 | 0/0 |
| 2010 | 24/19 | 0/1 | 16/10 | 6/6 | 2/2 | 0/0 | 0/0 |
| 2009 | 21/20 | 1/1 | 12/11 | 7/6 | 1/2 | 0/0 | 0/0 |
| 2008 | 34/13 | 7/3 | 20/5 | 6/3 | 0/1 | 1/1 | 0/0 |
| 2007 | 17/8 | 3/2 | 10/5 | 0/0 | 0/0 | 4/1 | 0/0 |
| 2006 | 3/3 | 0/0 | 3/3 | 0/0 | 0/0 | 0/0 | 0/0 |
| TOTAL | 410/329 | 70/67 | 228/174 | 87/65 | 18/17 | 7/6 | 0/0 |
| perc. % | 55.48 % | 51.09 % | 56.72 % | 57.24 % | 51.43 % | 53.85 % | 0 % |
Katarzyna Piter / scheduled / last
| no matches found |
Katarzyna Piter form / surface: Clay
Katarzyna Piter / surface: Clay
| 05.07.21 | q 1 | Katharina Gerlach | Katarzyna Piter | 6-2, 7-5 |  | match details |  Hamburg | Clay |
| 03.04.21 | q 1 | Marina Melnikova | Katarzyna Piter | 7-5, 6-0 | | match details |  Bogota | Clay |
| 08.09.20 | qual. | Flavie Brugnone | Katarzyna Piter | 6-0, 6-3 | | match details |  W60+H Saint | Clay |
| 24.08.20 | 1st round | Weronika Falkowska | Katarzyna Piter | 6-4, 3-6, 6-3 | | match details |  All Lower | Clay |
| 23.08.20 | 1st round | Katarzyna Piter | Julia Oczachowska | 6-0, 6-0 |  | match details | ||
| 18.08.20 | 1st round | Martyna Kubka | Katarzyna Piter | 6-4, 6-3 | | match details | ||
| 16.08.20 | 1st round | Katarzyna Piter | Paula Kania | 6-4, 6-3 | | match details | ||
| 31.07.20 | 1st round | Paula Kania | Katarzyna Piter | 6-3, 3-6, 7-63 | | match details | ||
| 30.07.20 | 1st round | Katarzyna Piter | Joanna Zawadzka | 6-4, 7-5 | | match details | ||
| 29.07.20 | 1st round | Katarzyna Piter | Valeriya Olyanovskaya | 6-75, 6-2, 4-2, Valeriya Olyanovskaya - retired | | match details | ||
| 28.07.20 | 1st round | Anastasiya Shoshyna | Katarzyna Piter | 6-0, 4-6, 6-3 | | match details | ||
| 27.07.20 | 1st round | Katarzyna Piter | Stefania Rogozinska Dzik | 6-2, 6-3 | | match details | ||
| 26.07.20 | 1st round | Katarzyna Piter | Marcelina Podlinska | 7-5, 6-2 | | match details | ||
| 18.07.20 | 1st round | Katarzyna Kawa | Katarzyna Piter | 7-64, 6-0 | | match details | ||
| 16.07.20 | 1st round | Katarzyna Piter | Paulina Czarnik | 6-1, 6-3 | | match details | ||
| 10.07.20 | 1st round | Katarzyna Piter | Mihaela Djakovic | 6-2, 5-7, 6-2 | | match details | ||
| 09.07.20 | 1st round | Viktoriya Tomova | Katarzyna Piter | 3-6, 6-3, 6-3 | | match details | ||
| 08.07.20 | 1st round | Katarzyna Piter | Barbara Bonic | 6-0, 6-0 | | match details | ||
| 07.07.20 | 1st round | Katarzyna Piter | Natalija Stevanovic | 6-2, 6-73, 4-1, Natalija Stevanovic - retired | | match details | ||
| 03.07.20 | 1st round | Danka Kovinic | Katarzyna Piter | 6-2, 6-4 | | match details | ||
| 02.07.20 | 1st round | Katarzyna Piter | Bojana Marinkovic | 6-0, 6-1 | | match details | ||
| 30.06.20 | 1st round | Katarzyna Piter | Doroteja Joksovic | 6-2, 6-3 | | match details | ||
| 29.06.20 | 1st round | Katarzyna Piter | Basak Eraydin | 6-1, 6-0 | | match details | ||
| 21.06.20 | 1st round | Katarzyna Piter | Wiktoria Saska | 6-0, 6-1 | | match details | ||
| 05.09.19 | 2nd round | Gabriela Horackova | Katarzyna Piter | 6-3, 4-6, 7-5 | | match details |  W25 Prague | Clay |
| 04.09.19 | 1st round | Katarzyna Piter | Sina Herrmann | 6-4, 6-1 | | match details | ||
| 30.08.19 | 1/4 | Barbara Haas | Katarzyna Piter | 6-2, 5-7, 6-4 | | match details | W25 Prague | Clay |
| 29.08.19 | 2nd round | Katarzyna Piter | Maryna Zanevska | Maryna Zanevska - walk over | | match details | ||
| 28.08.19 | 1st round | Katarzyna Piter | Julie Gervais | 6-4, 7-5 | | match details | ||
| 22.08.19 | 2nd round | Cagla Buyukakcay | Katarzyna Piter | 4-6, 6-4, 6-3 | | match details | W25 Braunschweig | Clay |
| 21.08.19 | 1st round | Katarzyna Piter | Romy Koelzer | 6-4, 4-6, 7-65 | | match details | ||
| 08.08.19 | 2nd round | Yue Yuan | Katarzyna Piter | 7-5, 6-3 | | match details |  W60 Warsaw | Clay |
| 07.08.19 | 1st round | Katarzyna Piter | Maryna Chernyshova | 6-3, 6-4 | | match details | ||
| 03.08.19 | 1/2 | Maja Chwalinska | Katarzyna Piter | 6-2, 6-2 | | match details | W25 Grodzisk | Clay |
| 02.08.19 | 1/4 | Katarzyna Piter | Ulrikke Eikeri | 6-3, 7-63 | | match details | ||
| 01.08.19 | 2nd round | Katarzyna Piter | Viktoriia Dema | 6-2, 6-1 | | match details | ||
| 31.07.19 | 1st round | Katarzyna Piter | Timea Jaruskova | 6-1, 6-4 | | match details | ||
| 28.07.19 | 1/2 | Nina Potocnik | Katarzyna Piter | 5-7, 6-4, 6-1 | | match details | W25 Bytom | Clay |
| 26.07.19 | 1/4 | Katarzyna Piter | Ipek Soylu | 7-5, 1-6, 6-4 | | match details | ||
| 25.07.19 | 2nd round | Katarzyna Piter | Karolina Kubanova | 6-1, 6-1 | | match details | ||
| 24.07.19 | 1st round | Katarzyna Piter | Marcelina Podlinska | 6-1, 6-1 | | match details | ||
| 03.07.19 | 1st round | Cagla Buyukakcay | Katarzyna Piter | 7-5, 4-6, 6-2 | | match details |  W25 Den | Clay |
| 27.06.19 | 2nd round | Olga Govortsova | Katarzyna Piter | 6-0, 6-2 | | match details | W25 Darmstadt | Clay |
| 25.06.19 | 1st round | Katarzyna Piter | Romy Koelzer | 7-5, 2-6, 6-2 | | match details | ||
| 13.06.19 | 2nd round | Miriam Bianca Bulgaru | Katarzyna Piter | 7-5, 6-3 | | match details | W25 Prerov | Clay |
| 12.06.19 | 1st round | Katarzyna Piter | Veronika Vlkovska | 4-6, 6-1, 6-4 | | match details | ||
| 18.05.19 | q 1 | Renata Zarazua | Katarzyna Piter | 7-5, 6-1 | | match details | Strasbourg | Clay |
| 25.04.19 | 2nd round | Usue Maitane Arconada | Katarzyna Piter | 6-2, 6-4 | | match details |  W25 Osprey | Clay |
| 23.04.19 | 1st round | Katarzyna Piter | Zuzana Zlochova | 6-3, 6-1 | | match details | ||
| 16.04.19 | qual. | Kristina Kucova | Katarzyna Piter | 6-2, 6-0 | | match details | W80 Dothan | Clay |
| 15.04.19 | q 1 | Katarzyna Piter | Emerald Able | 6-1, 6-1 | | match details | ||
| 11.04.19 | 2nd round | Caroline Dolehide | Katarzyna Piter | 6-3, 6-1 | | match details | W25 Pelham | Clay |
| 10.04.19 | 1st round | Katarzyna Piter | Victoria Rodriguez | 6-0, 6-3 | | match details | ||
| 05.04.19 | 2nd round | Katie Volynets | Katarzyna Piter | 6-3, 6-1 | | match details | W25 Jackson | Clay |
| 03.04.19 | 1st round | Katarzyna Piter | Dia Evtimova | 6-4, 6-0 | | match details | ||
| 21.09.18 | 1/4 | Irina Fetecau | Katarzyna Piter | 6-4, 6-4 | | match details |  Dobrich | Clay |
| 20.09.18 | 2nd round | Katarzyna Piter | Maria Marfutina | 2-6, 6-3, 7-5 | | match details | ||
| 19.09.18 | 1st round | Katarzyna Piter | Irene Burillo Escorihuela | 7-5, 6-3 | | match details | ||
| 06.09.18 | 2nd round | Olga Ianchuk | Katarzyna Piter | 6-4, 3-6, 7-63 | | match details | Sofia | Clay |
| 05.09.18 | 1st round | Katarzyna Piter | Gaia Sanesi | 6-4, 6-3 | | match details | ||
| 27.08.18 | qual. | Camilla Scala | Katarzyna Piter | 6-4, 6-4 | | match details |  Bagnatica | Clay |
| 26.08.18 | q 1 | Katarzyna Piter | Jessica Ho | 6-1, 6-1 | | match details | ||
| 22.08.18 | 1st round | Ivana Jorovic | Katarzyna Piter | 3-6, 6-2, 6-4 | | match details | Braunschweig | Clay |
| 12.08.18 | q 2 | Stephanie Wagner | Katarzyna Piter | 7-5, 0-6, 6-4 | | match details | Leipzig | Clay |
| 06.08.18 | q 2 | Jule Niemeier | Katarzyna Piter | 6-3, 6-3 | | match details | Hechingen | Clay |
| 05.08.18 | q 1 | Katarzyna Piter | Ksenia Palkina | 6-0, 6-1 | | match details | ||
| 29.07.18 | fin | Katharina Gerlach | Katarzyna Piter | 4-6, 6-3, 7-64 | | match details | Horb | Clay |
| 28.07.18 | 1/2 | Katarzyna Piter | Jaqueline Cristian | 6-4, 6-2 | | match details | ||
| 27.07.18 | 1/4 | Katarzyna Piter | Katharina Hobgarski | 6-0, 4-6, 6-4 | | match details | ||
| 26.07.18 | 2nd round | Katarzyna Piter | Carmen Schultheiss | 6-1, 7-63 | | match details | ||
| 25.07.18 | 1st round | Katarzyna Piter | Valeriya Strakhova | 7-5, 6-3 | | match details | ||
| 14.07.18 | q 1 | Martina Trevisan | Katarzyna Piter | 4-6, 7-66, 6-3 | | match details |  Gstaad | Clay |
| 12.07.18 | 2nd round | Bibiane Schoofs | Katarzyna Piter | 7-5, 6-2 | | match details | Versmold | Clay |
| 12.07.18 | 1st round | Katarzyna Piter | Chiara Scholl | 6-3, 6-1 | | match details | ||
| 10.07.18 | qual. | Katarzyna Piter | Miriam Kolodziejova | 7-61, 6-4 | | match details | ||
| 09.07.18 | q 2 | Katarzyna Piter | Aymet Uzcategui | 6-4, 6-2 | | match details | ||
| 08.07.18 | q 1 | Katarzyna Piter | Petra Krejsova | 6-2, 6-2 | | match details | ||
| 26.06.18 | 1st round | Marina Melnikova | Katarzyna Piter | 4-6, 7-5, 6-3 | | match details | Torun | Clay |
| 06.06.18 | 1st round | Francesca Di Lorenzo | Katarzyna Piter | 7-5, 6-1 | | match details | Brescia | Clay |
| 05.06.18 | qual. | Katarzyna Piter | Carolina Meligeni Alves | 6-3, 6-1 | | match details | ||
| 04.06.18 | q 2 | Katarzyna Piter | Gabriela Ce | 6-1, 6-1 | | match details | ||
| 03.06.18 | q 1 | Katarzyna Piter | Michele Alexandra Zmau | 6-1, 6-4 | | match details | ||
| 26.05.18 | q 1 | Maria Camila Osorio Serrano | Katarzyna Piter | 6-4, 6-2 | | match details | Grado | Clay |
| 20.05.18 | 1st round | Zarina Diyas | Katarzyna Piter | 6-2, 6-4 | | match details | Strasbourg | Clay |
| 19.05.18 | qual. | Katarzyna Piter | Jaqueline Cristian | 6-3, 6-2 | | match details | ||
| 18.05.18 | q 1 | Katarzyna Piter | Myrtille Georges | 6-1, 6-75, 6-4 | | match details | ||
| 07.12.17 | 2nd round | Ulrikke Eikeri | Katarzyna Piter | 6-1, 6-1 | | match details |  Nules | Clay |
| 05.12.17 | 1st round | Katarzyna Piter | Elixane Lechemia | 7-64, 6-0 | | match details | ||
| 19.09.17 | 1st round | Isabelle Wallace | Katarzyna Piter | 6-2, 2-6, 6-2 | | match details | Saint Malo | Clay |
| 06.09.17 | 1st round | Oana Georgeta Simion | Katarzyna Piter | 3-6, 7-5, 7-62 | | match details | Sofia | Clay |
| 08.08.17 | 1st round | Anna Kalinskaya | Katarzyna Piter | 6-2, 3-6, 6-3 | | match details | Hechingen | Clay |
| 26.07.17 | 1st round | Denisa Satralova | Katarzyna Piter | 7-61, 6-4 | | match details | Prague | Clay |
| 15.07.17 | q 1 | Varatchaya Wongteanchai | Katarzyna Piter | 1-6, 7-5, 6-3 | | match details |  Bucharest | Clay |
| 11.07.17 | 1st round | Anastasia Grymalska | Katarzyna Piter | 6-1, 6-4 | | match details | Torino | Clay |
| 04.07.17 | 1st round | Elena Gabriela Ruse | Katarzyna Piter | 6-2, 6-4 | | match details | Rome | Clay |
| 24.06.17 | 1/4 | Katarzyna Piter | Ani Mijacika | 6-3, 6-3 | | match details | Warsaw | Clay |
| 24.06.17 | 1/2 | Martina Trevisan | Katarzyna Piter | 6-4, 6-2 | | match details | ||
| 22.06.17 | 2nd round | Katarzyna Piter | Valeriya Urzhumova | 6-3, 6-2 | | match details | ||
| 21.06.17 | 1st round | Katarzyna Piter | Lou Brouleau | 6-1, 6-0 | | match details | ||
| 15.06.17 | 2nd round | Martina Caregaro | Katarzyna Piter | 6-2, 6-4 | | match details | Padova | Clay |
| 13.06.17 | 1st round | Katarzyna Piter | Bibiane Schoofs | 6-4, 7-64 | | match details | ||
| 20.05.17 | qual. | Julia Boserup | Katarzyna Piter | 6-2, 6-1 | | match details | Strasbourg | Clay |
| 19.05.17 | q 1 | Katarzyna Piter | Shuko Aoyama | 6-2, 6-76, 7-5 | | match details | ||
| 29.04.17 | q 1 | Natalia Vikhlyantseva | Katarzyna Piter | 6-1, 6-0 | | match details | Prague | Clay |
| 22.04.17 | q 1 | Oceane Dodin | Katarzyna Piter | 6-3, 6-4 | | match details | Stuttgart | Clay |
| 18.04.17 | 1st round | Giulia Gatto-Monticone | Katarzyna Piter | 6-4, 6-1 | | match details | Santa Margherita | Clay |
| 11.04.17 | 1st round | Marie Benoit | Katarzyna Piter | 7-5, 2-6, 7-65 | | match details | Santa Margherita | Clay |
| 06.04.17 | 2nd round | Karolina Muchova | Katarzyna Piter | 6-3, 6-4 | | match details | Santa Margherita | Clay |
| 05.04.17 | 1st round | Katarzyna Piter | Alice Matteucci | 6-1, 5-7, 6-1 | | match details | ||
| 25.01.17 | 1st round | Sophie Chang | Katarzyna Piter | 6-4, 7-65 | | match details | Wesley Chapel | Clay |
| 22.01.17 | fin | Katarzyna Piter | Sofia Kenin | 6-74, 6-2, 6-4 | | match details | Orlando | Clay |
| 21.01.17 | 1/2 | Katarzyna Piter | Elizabeth Halbauer | 6-1, 6-3 | | match details | ||
| 20.01.17 | 1/4 | Katarzyna Piter | Polina Leykina | 6-1, 6-2 | | match details | ||
| 19.01.17 | 2nd round | Katarzyna Piter | Jesika Maleckova | 6-3, 6-4 | | match details | ||
| 17.01.17 | 1st round | Katarzyna Piter | Paula Kania | 6-1, 5-7, 6-2 | | match details | ||
| 10.01.17 | 1st round | Sofya Zhuk | Katarzyna Piter | 0-6, 6-3, 7-5 | | match details | Daytona Beach | Clay |
| 02.09.16 | 1/4 | Oceane Dodin | Katarzyna Piter | 6-4, 6-4 | | match details | Barcelona | Clay |
| 31.08.16 | 2nd round | Katarzyna Piter | Alice Savoretti | 6-0, 6-0 | | match details | ||
| 30.08.16 | 1st round | Katarzyna Piter | Georgina Garcia-Perez | 3-6, 6-3, 6-2 | | match details | ||
| 28.08.16 | fin | Martina Trevisan | Katarzyna Piter | 6-1, 5-7, 7-5 | | match details | Bagnatica | Clay |
| 27.08.16 | 1/2 | Katarzyna Piter | Olga Saez Larra | 6-3, 5-2, Olga Saez Larra - retired | | match details | ||
| 26.08.16 | 1/4 | Katarzyna Piter | Conny Perrin | 6-3, 6-3 | | match details | ||
| 24.08.16 | 2nd round | Katarzyna Piter | Kathinka Von Deichmann | 6-0, 6-2 | | match details | ||
| 22.08.16 | 1st round | Katarzyna Piter | Alice Matteucci | 6-1, 6-2 | | match details | ||
| 17.08.16 | 1st round | Patty Schnyder | Katarzyna Piter | 6-72, 7-5, 7-60 | | match details | Leipzig | Clay |
| 03.08.16 | 1st round | Georgina Garcia-Perez | Katarzyna Piter | 6-3, 7-5 | | match details | Plzen | Clay |
| 28.07.16 | 2nd round | Carina Witthoeft | Katarzyna Piter | 3-6, 6-4, 6-4 | | match details | Prague | Clay |
| 27.07.16 | 1st round | Katarzyna Piter | Andrea Hlavackova | 2-6, 6-4, 6-1 | | match details | ||
| 11.07.16 | qual. | Elitsa Kostova | Katarzyna Piter | 6-4, 6-2 | | match details | Bucharest | Clay |
| 10.07.16 | q 2 | Katarzyna Piter | Susanne Celik | 6-1, 6-77, 6-3 | | match details | ||
| 09.07.16 | q 1 | Katarzyna Piter | Miriam Bianca Bulgaru | 6-1, 6-4 | | match details | ||
| 30.06.16 | 1/4 | Alexandra Cadantu | Katarzyna Piter | 6-3, 4-1, Katarzyna Piter - retired | | match details | Rome | Clay |
| 29.06.16 | 2nd round | Katarzyna Piter | Myrtille Georges | 3-6, 6-2, 6-3 | | match details | ||
| 28.06.16 | 1st round | Katarzyna Piter | Lisa Sabino | 6-1, 6-1 | | match details | ||
| 21.06.16 | 1st round | Eri Hozumi | Katarzyna Piter | 6-2, 6-3 | | match details | Rome | Clay |
| 16.06.16 | 2nd round | Shilin Xu | Katarzyna Piter | 6-4, 6-2 | | match details | Braunschweig | Clay |
| 14.06.16 | 1st round | Katarzyna Piter | Marcela Zacarias | 7-5, 6-1 | | match details | ||
| 10.06.16 | 2nd round | Katarzyna Piter | Barbara Haas | 6-4, 2-6, 6-2 | | match details | Padova | Clay |
| 10.06.16 | 1/4 | Tamara Zidansek | Katarzyna Piter | 6-2, 6-2 | | match details | ||
| 07.06.16 | 1st round | Katarzyna Piter | Fiona Ferro | 3-6, 6-3, 6-3 | | match details | ||
| 01.06.16 | 1st round | Kaia Kanepi | Katarzyna Piter | 6-2, 6-2 | | match details | Brescia | Clay |
| 23.05.16 | 1st round | Daniela Seguel | Katarzyna Piter | 6-1, 4-6, 6-1 | | match details | Grado | Clay |
| 14.05.16 | q 1 | Cristina Dinu | Katarzyna Piter | 6-3, 3-6, 6-2 | | match details | Nurnberg | Clay |
| 10.05.16 | 1st round | Irina Maria Bara | Katarzyna Piter | 6-0, 2-6, 6-2 | | match details |  Gyor | Clay |
| 24.04.16 | q 2 | Marina Erakovic | Katarzyna Piter | 6-4, 6-0 | | match details |  Rabat | Clay |
| 23.04.16 | q 1 | Katarzyna Piter | Lesley Pattinama Kerkhove | 3-6, 7-62, 7-5 | | match details | ||
| 17.04.16 | q 1 | Maryna Zanevska | Katarzyna Piter | 7-65, 7-64 | | match details |  Istanbul | Clay |
| 10.08.15 | 1st round | Katarzyna Piter | Rebecca Peterson | 6-4, 7-5 | | match details | Prague | Clay |
| 10.08.15 | 2nd round | Maria-Teresa Torro-Flor | Katarzyna Piter | 6-73, 6-3, 7-5 | | match details | ||
| 27.07.15 | 1st round | Sesil Karatantcheva | Katarzyna Piter | 6-2, 7-5 | | match details | Sobota / | Clay |
| 20.07.15 | qual. | Maryna Zanevska | Katarzyna Piter | 6-2, 6-4 | | match details |  Bad Gastein | Clay |
| 19.07.15 | q 1 | Katarzyna Piter | Alexa Glatch | 6-4, 3-6, 6-2 | | match details | ||
| 11.07.15 | q 1 | Tereza Martincova | Katarzyna Piter | 6-3, 6-3 | | match details | Bucharest | Clay |
| 29.06.15 | 1st round | Katarzyna Piter | Katharina Lehnert | 6-0, 2-6, 7-5 | | match details | Torun | Clay |
| 29.06.15 | 2nd round | Melanie Klaffner | Katarzyna Piter | 6-3, 6-3 | | match details | ||
| 22.06.15 | 1st round | Katarzyna Piter | Eleni Daniilidou | 6-4, 6-2 | | match details |  Helsingborg | Clay |
| 22.06.15 | 2nd round | Malin Ulvefeldt | Katarzyna Piter | 7-66, 3-6, 7-66 | | match details | ||
| 15.06.15 | 1st round | Melanie Stokke | Katarzyna Piter | 6-2, 6-3 | | match details | Ystad | Clay |
| 01.06.15 | 2nd round | Vitalia Diatchenko | Katarzyna Piter | 3-6, 6-3, 6-4 | | match details | Brescia | Clay |
| 01.06.15 | 1st round | Katarzyna Piter | Nastja Kolar | 6-3, 6-1 | | match details | ||
| 25.05.15 | 1/2 | Katarzyna Piter | Tereza Martincova | 6-4, 1-0, Tereza Martincova - retired | | match details | Grado | Clay |
| 25.05.15 | 1st round | Katarzyna Piter | Lucia Cervera-Vazquez | 7-5, 6-2 | | match details | ||
| 25.05.15 | fin | Katarzyna Piter | Kristina Schmiedlova | 6-3, 6-0 | | match details | ||
| 25.05.15 | 2nd round | Katarzyna Piter | Andrea Gamiz | 6-4, 6-4 | | match details | ||
| 25.05.15 | 1/4 | Katarzyna Piter | Olga Saez Larra | 1-6, 7-62, 2-1, Olga Saez Larra - retired | | match details | ||
| 16.05.15 | qual. | Gabriela Dabrowski | Katarzyna Piter | 1-6, 6-2, 6-3 | | match details | Strasbourg | Clay |
| 15.05.15 | q 1 | Katarzyna Piter | Francoise Abanda | 6-3, 6-3 | | match details | ||
| 20.04.15 | 2nd round | Paula Cristina Goncalves | Katarzyna Piter | 6-76, 7-5, 7-66 | | match details | Dothan | Clay |
| 20.04.15 | 1st round | Katarzyna Piter | Irina Khromacheva | 5-7, 6-2, 6-4 | | match details | ||
| 13.04.15 | 1/4 | Johanna Konta | Katarzyna Piter | 7-5, 6-0 | | match details | Pelham | Clay |
| 13.04.15 | 1st round | Katarzyna Piter | Alexandra Stevenson | 6-0, 2-6, 6-3 | | match details | ||
| 13.04.15 | 2nd round | Katarzyna Piter | Raveena Kingsley | 6-3, 6-3 | | match details | ||
| 04.04.15 | q 1 | Jovana Jovic | Katarzyna Piter | 6-2, 6-71, 6-2 | | match details | Charleston | Clay |
| 30.03.15 | q 1 | Martina Caregaro | Katarzyna Piter | 7-63, 6-0 | | match details | Osprey | Clay |
| 23.03.15 | 1st round | Tereza Mrdeza | Katarzyna Piter | 6-2, 6-4 | | match details | Palm Harbor | Clay |
| 16.03.15 | 1st round | Katarzyna Piter | Beatriz Garcia-Vidagany | 6-0, Beatriz Garcia-Vidagany - retired | | match details | Seville | Clay |
| 16.03.15 | 2nd round | Giulia Gatto-Monticone | Katarzyna Piter | 6-2, 6-3 | | match details | ||
| 15.07.14 | 1st round | Annika Beck | Katarzyna Piter | 6-3, 4-6, 6-3 | | match details | Bastad | Clay |
| 09.07.14 | 2nd round | Polona Hercog | Katarzyna Piter | 6-2, 5-7, 7-64 | | match details | Bucharest | Clay |
| 08.07.14 | 1st round | Katarzyna Piter | Andreea Mitu | 6-0, 1-6, 7-65 | | match details | ||
| 25.05.14 | 1st round | Angelique Kerber | Katarzyna Piter | 6-3, 6-1 | | match details | Paris | Clay |
| 16.05.14 | q 1 | Dia Evtimova | Katarzyna Piter | 2-6, 6-2, 6-2 | | match details | Nurnberg | Clay |
| 10.05.14 | q 1 | Ajla Tomljanovic | Katarzyna Piter | 6-0, 6-1 | | match details | Rome | Clay |
| 03.05.14 | qual. | Julia Goerges | Katarzyna Piter | 6-2, 6-3 | | match details | Madrid | Clay |
| 02.05.14 | q 1 | Katarzyna Piter | Ajla Tomljanovic | 1-6, 7-5, 7-63 | | match details | ||
| 20.04.14 | q 2 | Anastasia Grymalska | Katarzyna Piter | 5-7, 7-63, 6-0 | | match details | Marrakech | Clay |
| 19.04.14 | q 1 | Katarzyna Piter | Irina Ramialison | 6-3, 6-0 | | match details | ||
| 21.02.14 | 1/4 | Klara Koukalova | Katarzyna Piter | 6-4, 6-0 | | match details |  Rio de | Clay |
| 19.02.14 | 2nd round | Katarzyna Piter | Dinah Pfizenmaier | 5-7, 6-3, 6-1 | | match details | ||
| 17.02.14 | 1st round | Katarzyna Piter | Beatriz Haddad Maia | 6-3, 6-3 | | match details | ||
| 15.07.13 | fin | Polona Hercog | Katarzyna Piter | 6-0, 6-3 | | match details | Olomouc | Clay |
| 15.07.13 | 2nd round | Katarzyna Piter | Martina Borecka | 6-4, 6-3 | | match details | ||
| 15.07.13 | 1/4 | Katarzyna Piter | Cristina Dinu | 4-6, 6-4, 6-1 | | match details | ||
| 15.07.13 | 1/2 | Katarzyna Piter | Barbora Strycova | 6-4, 5-7, 6-4 | | match details | ||
| 15.07.13 | 1st round | Katarzyna Piter | Pernilla Mendesova | 6-0, 6-2 | | match details | ||
| 01.07.13 | 2nd round | Katarzyna Piter | Anna-Lena Friedsam | 6-4, 4-6, 7-5 | | match details | Torun | Clay |
| 01.07.13 | 1/4 | Katarzyna Piter | Magda Linette | 6-3, 6-1 | | match details | ||
| 01.07.13 | 1/2 | Katarzyna Piter | Anna Schmiedlova | 6-4, 6-3 | | match details | ||
| 01.07.13 | fin | Paula Kania | Katarzyna Piter | 6-4, 6-4 | | match details | ||
| 01.07.13 | 1st round | Katarzyna Piter | Darya Shulzhanok | 6-1, 6-2 | | match details | ||
| 24.06.13 | 2nd round | Katarzyna Piter | Deniz Khazaniuk | 3-6, 6-3, 6-4 | | match details | Zlin | Clay |
| 24.06.13 | 1/2 | Kristina Kucova | Katarzyna Piter | 6-4, 3-6, 7-63 | | match details | ||
| 24.06.13 | 1/4 | Katarzyna Piter | Paula Kania | 6-4, 6-3 | | match details | ||
| 24.06.13 | 1st round | Katarzyna Piter | Ekaterina Alexandrova | 6-2, 6-3 | | match details | ||
| 08.06.13 | q 1 | Tereza Smitkova | Katarzyna Piter | 6-1, 6-4 | | match details | Nurnberg | Clay |
| 03.06.13 | 1st round | Katarzyna Piter | Yurika Sema | 6-1, 1-0, Yurika Sema - retired | | match details | Brescia | Clay |
| 03.06.13 | 2nd round | Katarzyna Piter | Anna-Giulia Remondina | 6-3, 6-1 | | match details | ||
| 03.06.13 | 1/4 | Anastasia Grymalska | Katarzyna Piter | 6-3, 6-2 | | match details | ||
| 27.05.13 | 2nd round | Katarzyna Piter | Yurika Sema | 7-65, 6-0 | | match details | Grado | Clay |
| 27.05.13 | 1st round | Katarzyna Piter | Elitsa Kostova | 6-4, 6-2 | | match details | ||
| 27.05.13 | fin | Yvonne Meusburger | Katarzyna Piter | 6-2, 6-72, 6-3 | | match details | ||
| 27.05.13 | 1/4 | Katarzyna Piter | Anna Floris | 6-0, 6-2 | | match details | ||
| 27.05.13 | q 1 | Katarzyna Piter | Anna Korzeniak | 6-1, 6-1 | | match details | ||
| 27.05.13 | 1/2 | Katarzyna Piter | Alberta Brianti | 6-3, 6-74, 6-1 | | match details | ||
| 27.05.13 | qual. | Katarzyna Piter | Lina Stanciute | 6-4, 4-6, 6-0 | | match details | ||
| 19.05.13 | q 2 | Flavia Pennetta | Katarzyna Piter | 7-5, 6-1 | | match details | Strasbourg | Clay |
| 18.05.13 | q 1 | Katarzyna Piter | Asia Muhammad | 6-1, 6-1 | | match details | ||
| 13.05.13 | q 1 | Katarzyna Piter | Tammi Patterson | 6-2, 6-1 | | match details | Prague | Clay |
| 13.05.13 | q 2 | Katarzyna Piter | Jill Craybas | 2-6, 7-64, 6-2 | | match details | ||
| 13.05.13 | qual. | Ana Vrljic | Katarzyna Piter | 6-4, 7-5 | | match details | ||
| 22.04.13 | 1st round | Katarzyna Piter | Eugeniya Pashkova | 6-4, 6-2 | | match details |  Tunis | Clay |
| 22.04.13 | 2nd round | Yana Buchina | Katarzyna Piter | 6-4, 6-0 | | match details | ||
| 08.04.13 | qual. | Maria-Elena Camerin | Katarzyna Piter | 6-2, 6-4 | | match details | Katowice | Clay |
| 07.04.13 | q 2 | Katarzyna Piter | Maria Joao Koehler | 7-5, 6-3 | | match details | ||
| 06.04.13 | q 1 | Katarzyna Piter | Marie Bouzkova | 4-6, 6-2, 6-1 | | match details | ||
| 24.02.13 | q 2 | Eugenie Bouchard | Katarzyna Piter | 6-3, 6-3 | | match details |  Acapulco | Clay |
| 23.02.13 | q 1 | Katarzyna Piter | Ines Ferrer-Suarez | 6-2, 6-0 | | match details | ||
| 09.02.13 | q 1 | Arantxa Parra-Santonja | Katarzyna Piter | 6-2, 7-5 | | match details | Cali | Clay |
| 15.10.12 | 2nd round | Estrella Cabeza-Candela | Katarzyna Piter | 6-3, 6-4 | | match details | Seville | Clay |
| 15.10.12 | 1st round | Katarzyna Piter | Ilona Kremen | 6-2, 6-0 | | match details | ||
| 15.10.12 | q 2 | Katarzyna Piter | Dakota Norton | 6-0, 6-0 | | match details | ||
| 08.10.12 | qual. | Katarzyna Piter | Conny Perrin | 3-6, 7-61, 6-4 | | match details | St.Cugat | Clay |
| 08.10.12 | 1st round | Katarzyna Piter | Justine Ozga | 6-4, 3-6, 6-3 | | match details | ||
| 08.10.12 | q 2 | Katarzyna Piter | Olga Saez Larra | 6-1, 2-6, 6-3 | | match details | ||
| 08.10.12 | 2nd round | Estrella Cabeza-Candela | Katarzyna Piter | 6-1, 6-4 | | match details | ||
| 17.09.12 | qual. | Katarzyna Piter | Michaela Boev | 6-3, 6-2 | | match details | Dobrich | Clay |
| 17.09.12 | 1st round | Isabella Shinikova | Katarzyna Piter | 6-4, 1-6, 6-1 | | match details | ||
| 17.09.12 | q 2 | Katarzyna Piter | Vivian Zlatanova | 6-1, 6-2 | | match details | ||
| 10.09.12 | qual. | Victoria Kan | Katarzyna Piter | 1-6, 6-1, 6-4 | | match details | Sofia | Clay |
| 10.09.12 | q 1 | Katarzyna Piter | Aleksandra Karamanoleva | 6-1, 6-3 | | match details | ||
| 05.09.12 | 2nd round | Diana Marcinkevica | Katarzyna Piter | 6-74, 7-5, 6-3 | | match details | Alphen aan | Clay |
| 03.09.12 | 1st round | Katarzyna Piter | Eva Fernandez-Brugues | 7-65, 7-64 | | match details | ||
| 03.09.12 | qual. | Katarzyna Piter | Eugeniya Pashkova | 6-1, 6-4 | | match details | ||
| 03.09.12 | q 1 | Katarzyna Piter | Ekaterine Gorgodze | 6-4, 6-3 | | match details | ||
| 30.07.12 | 1st round | Katarzyna Piter | Sarah-Rebecca Sekulic | 7-63, 6-3 | | match details | Bad Saulgau | Clay |
| 30.07.12 | 2nd round | Mervana Jugic-Salkic | Katarzyna Piter | 6-1, 6-1 | | match details | ||
| 23.07.12 | q 1 | Katarzyna Piter | Michaela Pochabova | 6-2, 6-1 | | match details | Olomouc | Clay |
| 23.07.12 | qual. | Kristina Kucova | Katarzyna Piter | 1-6, 6-1, 6-2 | | match details | ||
| 23.07.12 | q 2 | Katarzyna Piter | Marina Melnikova | 6-3, 6-1 | | match details | ||
| 02.07.12 | 1st round | Katarzyna Piter | Marina Shamayko | 7-64, 6-0 | | match details | Torun | Clay |
| 02.07.12 | 2nd round | Diana Marcinkevica | Katarzyna Piter | 6-3, 6-3 | | match details | ||
| 25.06.12 | q 1 | Katarzyna Piter | Malene Stripp | 6-1, 6-0 | | match details | Ystad | Clay |
| 25.06.12 | qual. | Katarzyna Piter | Paulina Milosavljevic | 7-5, 6-3 | | match details | ||
| 25.06.12 | 1st round | Petra Rampre | Katarzyna Piter | 6-3, 7-65 | | match details | ||
| 11.06.12 | 2nd round | Katarzyna Piter | Carina Witthoeft | 7-64, 3-6, 7-5 | | match details | Padova | Clay |
| 11.06.12 | 1/4 | Corinna Dentoni | Katarzyna Piter | 6-1, 5-7, 7-64 | | match details | ||
| 11.06.12 | 1st round | Katarzyna Piter | Zuzana Zlochova | 4-6, 6-4, 6-1 | | match details | ||
| 21.05.12 | q 1 | Katarzyna Piter | Camilla Littlewood | 6-1, 6-0 | | match details | Brescia | Clay |
| 21.05.12 | 2nd round | Anna Schmiedlova | Katarzyna Piter | 6-3, 6-3 | | match details | ||
| 21.05.12 | qual. | Katarzyna Piter | Camilla Scala | 6-2, 6-2 | | match details | ||
| 21.05.12 | 1st round | Katarzyna Piter | Romana Caroline Tabak | 7-5, 2-6, 6-3 | | match details | ||
| 14.05.12 | q 1 | Katarzyna Piter | Chiara Pascale | 6-0, 6-3 | | match details | Caserta | Clay |
| 14.05.12 | qual. | Katarzyna Piter | Chiara Mendo | 7-63, 2-6, 6-4 | | match details | ||
| 14.05.12 | 1st round | Irena Pavlovic | Katarzyna Piter | 6-1, 6-2 | | match details | ||
| 23.04.12 | q 2 | Chieh-Yu Hsu | Katarzyna Piter | Katarzyna Piter - walk over | | match details | Charlottesville | Clay |
| 23.04.12 | q 1 | Katarzyna Piter | Ashley Weinhold | 2-6, 7-65, 3-0, Ashley Weinhold - retired | | match details | ||
| 16.04.12 | q 1 | Grace Min | Katarzyna Piter | 4-6, 7-5, 6-4 | | match details | Dothan | Clay |
| 09.04.12 | q 1 | Katarzyna Piter | Eleanor Peters | 6-1, 6-2 | | match details | Pelham | Clay |
| 09.04.12 | q 2 | Katarzyna Piter | Ana-Clara Duarte | 6-1, 6-2 | | match details | ||
| 09.04.12 | qual. | Shelby Rogers | Katarzyna Piter | 6-2, 6-3 | | match details | ||
| 02.04.12 | 1st round | Lena Litvak | Katarzyna Piter | 6-1, 4-6, 6-2 | | match details | Jackson | Clay |
| 02.04.12 | q 2 | Katarzyna Piter | Lizeth Ramirez | 6-0, 6-0 | | match details | ||
| 02.04.12 | qual. | Katarzyna Piter | Olga Ianchuk | 6-2, 2-6, 6-1 | | match details | ||
| 17.10.11 | 1st round | Garbine Muguruza | Katarzyna Piter | 6-3, 7-62 | | match details | Seville | Clay |
| 10.10.11 | qual. | Paula Kania | Katarzyna Piter | 3-6, 7-64, 6-4 | | match details | St.Cugat | Clay |
| 10.10.11 | q 2 | Katarzyna Piter | Marianna Zakarlyuk | 6-2, 6-0 | | match details | ||
| 12.09.11 | 1st round | Katarzyna Piter | Ana-Clara Duarte | 6-4, 6-1 | | match details | Rotterdam | Clay |
| 12.09.11 | 1/4 | Dinah Pfizenmaier | Katarzyna Piter | 6-4, 6-2 | | match details | ||
| 12.09.11 | 2nd round | Katarzyna Piter | Myrtille Georges | 6-2, 6-2 | | match details | ||
| 05.09.11 | 2nd round | Katarzyna Piter | Aleksandrina Naydenova | 6-4, 6-0 | | match details | Alphen aan | Clay |
| 05.09.11 | 1/4 | Katarzyna Piter | Ksenia Kirillova | 6-3, 6-2 | | match details | ||
| 05.09.11 | 1/2 | Katarzyna Piter | Angelique Van Der Meet | 6-1, 6-2 | | match details | ||
| 05.09.11 | 1st round | Katarzyna Piter | Sarah Gronert | 6-3, 6-2 | | match details | ||
| 05.09.11 | fin | Stephanie Vogt | Katarzyna Piter | 6-2, 6-4 | | match details | ||
| 22.08.11 | 1st round | Mervana Jugic-Salkic | Katarzyna Piter | 2-6, 6-1, 6-3 | | match details | Prague Neride | Clay |
| 08.08.11 | 1st round | Ines Ferrer-Suarez | Katarzyna Piter | 3-6, 6-4, 6-4 | | match details |  Koksijde | Clay |
| 01.08.11 | 1st round | Mariana Duque-Marino | Katarzyna Piter | 7-5, 6-2 | | match details | Hechingen | Clay |
| 25.07.11 | 1st round | Katarzyna Piter | Scarlett Werner | 2-6, 7-65, 6-3 | | match details | Bad Saulgau | Clay |
| 25.07.11 | 2nd round | Zuzana Luknarova | Katarzyna Piter | 6-1, 6-4 | | match details | ||
| 10.07.11 | q 2 | Lara Arruabarrena | Katarzyna Piter | 1-6, 6-1, 6-4 | | match details | Palermo | Clay |
| 09.07.11 | q 1 | Katarzyna Piter | Stamatia Fafaliou | 6-2, 6-2 | | match details | ||
| 27.06.11 | 1st round | Magda Linette | Katarzyna Piter | 6-1, 6-0 | | match details | Torun | Clay |
| 20.06.11 | 2nd round | Veronica Cepede Royg | Katarzyna Piter | 6-1, 5-7, 6-1 | | match details | Tevere Remo | Clay |
| 20.06.11 | 1st round | Katarzyna Piter | Stefania Chieppa | 7-5, 7-5 | | match details | ||
| 13.06.11 | 2nd round | Erika Zanchetta | Katarzyna Piter | 4-6, 6-4, 6-4 | | match details | Padova | Clay |
| 13.06.11 | 1st round | Katarzyna Piter | Evelyn Mayr | 6-1, 6-4 | | match details | ||
| 14.05.11 | q 1 | Maria Joao Koehler | Katarzyna Piter | 3-6, 7-5, 6-4 | | match details | Strasbourg | Clay |
| 09.05.11 | q 2 | Katarzyna Piter | Aneta Dvorakova | 6-3, 6-1 | | match details | Prague | Clay |
| 09.05.11 | 1st round | Katarzyna Piter | Viktoria Kutuzova | 5-7, 6-4, 6-3 | | match details | ||
| 09.05.11 | q 1 | Katarzyna Piter | Karolina Cechova | 6-0, 6-1 | | match details | ||
| 09.05.11 | 2nd round | Magdalena Rybarikova | Katarzyna Piter | 6-3, 6-2 | | match details | ||
| 09.05.11 | qual. | Ahsha Rolle | Katarzyna Piter | 1-6, 6-1, 6-4 | | match details | ||
| 24.04.11 | q 2 | Heather Watson | Katarzyna Piter | 6-4, 6-4 | | match details |  Estoril | Clay |
| 23.04.11 | q 1 | Katarzyna Piter | Stefanie Voegele | 6-4, 2-6, 6-1 | | match details | ||
| 17.04.11 | q 2 | Eleni Daniilidou | Katarzyna Piter | 6-2, 6-4 | | match details | Fes | Clay |
| 16.04.11 | q 1 | Katarzyna Piter | Jessica Moore | 7-65, 6-1 | | match details | ||
| 11.04.11 | 1st round | Nanuli Pipiya | Katarzyna Piter | 6-2, 6-2 | | match details | Casablanca | Clay |
| 20.09.10 | 1st round | Katarzyna Piter | Alexia Virgili | 7-64, 6-3 | | match details | Foggia | Clay |
| 20.09.10 | 2nd round | Julia Schruff | Katarzyna Piter | 6-1, 6-4 | | match details | ||
| 13.09.10 | 1st round | Katarzyna Piter | Valentine Confalonieri | 4-6, 6-3, 6-3 | | match details | Mestre | Clay |
| 13.09.10 | 2nd round | Zuzana Ondraskova | Katarzyna Piter | 6-0, 7-67 | | match details | ||
| 06.09.10 | 1st round | Oxana Lyubtsova | Katarzyna Piter | 6-75, 6-3, 6-2 | | match details | Katowice | Clay |
| 09.08.10 | 1/4 | Katarzyna Piter | Giulia Gatto-Monticone | 4-6, 6-1, 6-1 | | match details | Koksijde | Clay |
| 09.08.10 | 1/2 | Katarzyna Piter | Lara Arruabarrena | 6-3, 7-65 | | match details | ||
| 09.08.10 | 1st round | Katarzyna Piter | Gioia Barbieri | 6-3, 7-64 | | match details | ||
| 09.08.10 | fin | Katarzyna Piter | Kiki Bertens | 6-4, 6-4 | | match details | ||
| 09.08.10 | 2nd round | Katarzyna Piter | Anastasia Grymalska | 1-6, 6-3, 6-1 | | match details | ||
| 02.08.10 | 1/4 | Katarzyna Piter | Florencia Molinero | 6-4, 6-1 | | match details | Hechingen | Clay |
| 02.08.10 | 1st round | Katarzyna Piter | Julia Kimmelmann | 6-0, 6-3 | | match details | ||
| 02.08.10 | 1/2 | Silvia Soler-Espinosa | Katarzyna Piter | 6-2, 6-0 | | match details | ||
| 02.08.10 | 2nd round | Katarzyna Piter | Ana Vrljic | 6-2, 3-0, Ana Vrljic - retired | | match details | ||
| 26.07.10 | 1st round | Anna-Giulia Remondina | Katarzyna Piter | 3-6, 6-3, 6-4 | | match details | Bad Saulgau | Clay |
| 28.06.10 | 1/2 | Ksenia Pervak | Katarzyna Piter | 6-4, 6-73, 6-3 | | match details | Torun | Clay |
| 28.06.10 | 1/4 | Katarzyna Piter | Veronika Kapshay | 7-5, 6-3 | | match details | ||
| 28.06.10 | 1st round | Katarzyna Piter | Alyona Sotnikova | 6-1, 6-4 | | match details | ||
| 28.06.10 | 2nd round | Katarzyna Piter | Sandra Martinovic | 6-1, 6-4 | | match details | ||
| 14.06.10 | 1st round | Zuzana Luknarova | Katarzyna Piter | 2-6, 7-5, 6-3 | | match details | Bratislava | Clay |
| 07.06.10 | 2nd round | Katarzyna Piter | Elena Bogdan | 6-4, 6-0 | | match details | Szczecin | Clay |
| 07.06.10 | 1/4 | Margit Ruutel | Katarzyna Piter | 6-4, 1-6, 7-5 | | match details | ||
| 07.06.10 | 1st round | Katarzyna Piter | Tetyana Arefyeva | 6-3, 6-1 | | match details | ||
| 31.05.10 | 1st round | Irina Buryachok | Katarzyna Piter | 6-2, 2-6, 7-64 | | match details |  Sarajevo | Clay |
| 19.05.10 | 2nd round | Na Li | Katarzyna Piter | 6-0, 6-3 | | match details | Warsaw | Clay |
| 18.05.10 | 1st round | Katarzyna Piter | Marta Domachowska | 7-63, 4-6, 7-5 | | match details | ||
| 14.09.09 | 1st round | Angelique Kerber | Katarzyna Piter | 1-6, 6-3, 6-1 | | match details | Sofia | Clay |
| 07.09.09 | 2nd round | Eva Birnerova | Katarzyna Piter | 6-4, 6-4 | | match details | Alphen aan | Clay |
| 07.09.09 | 1st round | Katarzyna Piter | Natalia Orlova | 2-6, 6-1, 6-3 | | match details | ||
| 31.08.09 | 1st round | Sandra Zahlavova | Katarzyna Piter | 6-4, 3-6, 6-2 | | match details | Katowice | Clay |
| 03.08.09 | 1st round | Katarzyna Piter | Ana Jovanovic | 7-5, 6-3 | | match details | Hechingen | Clay |
| 03.08.09 | 2nd round | Lenka Jurikova | Katarzyna Piter | 6-3, 6-3 | | match details | ||
| 27.07.09 | 1/4 | Andrea Hlavackova | Katarzyna Piter | 6-0, 6-2 | | match details | Bad Saulgau | Clay |
| 27.07.09 | 1st round | Katarzyna Piter | Ksenia Lykina | 2-6, 7-5, 7-5 | | match details | ||
| 27.07.09 | 2nd round | Katarzyna Piter | Monique Adamczak | 6-0, 6-3 | | match details | ||
| 20.07.09 | 1/4 | Katarzyna Piter | Barbara Bonic | 6-74, 6-2, 6-2 | | match details | Horb | Clay |
| 20.07.09 | 1st round | Katarzyna Piter | Verena Schmid | 6-2, 6-2 | | match details | ||
| 20.07.09 | 2nd round | Katarzyna Piter | Matea Mezak | 6-3, 6-2 | | match details | ||
| 20.07.09 | 1/2 | Lucie Kriegsmannova | Katarzyna Piter | 5-7, 6-2, 6-2 | | match details | ||
| 06.07.09 | 1/2 | Katarzyna Piter | Katerina Vankova | 6-4, 6-4 | | match details | Brussels | Clay |
| 06.07.09 | 1st round | Katarzyna Piter | Sarah Gronert | 7-65, 3-6, 6-1 | | match details | ||
| 06.07.09 | 2nd round | Katarzyna Piter | Debbrich Feys | 6-0, 6-3 | | match details | ||
| 06.07.09 | fin | Maryna Zanevska | Katarzyna Piter | 0-6, 7-5, 7-5 | | match details | ||
| 06.07.09 | 1/4 | Katarzyna Piter | Simona Dobra | 7-610, 6-3 | | match details | ||
| 29.06.09 | 2nd round | Oksana Kalashnikova | Katarzyna Piter | 6-2, 6-0 | | match details | Torun | Clay |
| 29.06.09 | 1st round | Katarzyna Piter | Sandra Zaniewska | 6-0, 6-3 | | match details | ||
| 08.06.09 | 1st round | Melanie Klaffner | Katarzyna Piter | 6-3, 3-6, 7-5 | | match details | Szczecin | Clay |
| 01.06.09 | 1st round | Jasmina Kajtazovic | Katarzyna Piter | 6-4, 2-6, 7-5 | | match details | Sarajevo | Clay |
| 18.05.09 | 1st round | Alona Bondarenko | Katarzyna Piter | 6-0, 6-0 | | match details | Warsaw | Clay |
| 06.10.08 | 1/2 | Samantha Schoeffel | Katarzyna Piter | 6-2, 1-6, 6-1 | | match details | Barcelona | Clay |
| 06.10.08 | 2nd round | Katarzyna Piter | Appollonia Melzani | 6-1, 6-2 | | match details | ||
| 06.10.08 | 1/4 | Katarzyna Piter | Justine Ozga | 6-4, 6-2 | | match details | ||
| 06.10.08 | 1st round | Katarzyna Piter | Ximena Hermoso | 6-1, 6-1 | | match details | ||
| 02.06.08 | 1st round | Kristina Mladenovic | Katarzyna Piter | 2-6, 6-3, 6-4 | | match details | French Open | Clay |
| 12.05.08 | 1st round | Katarzyna Piter | Lenka Tvaroskova | 7-5, 6-1 | | match details | Szczecin | Clay |
| 12.05.08 | 2nd round | Katarzyna Piter | Maria Abramovic | 6-4, 6-4 | | match details | ||
| 12.05.08 | 1/2 | Barbora Strycova | Katarzyna Piter | 6-74, 6-3, 6-2 | | match details | ||
| 12.05.08 | 1/4 | Katarzyna Piter | Julia Glushko | 6-72, 6-3, 6-2 | | match details | ||
| 05.05.08 | 1st round | Katarzyna Piter | Martina Kostalova | 6-2, 6-1 | | match details |  Michalovce | Clay |
| 05.05.08 | 1/2 | Klaudia Boczova | Katarzyna Piter | 1-6, 7-5, 6-3 | | match details | ||
| 05.05.08 | 2nd round | Katarzyna Piter | Csilla Argyelan | 6-3, 6-2 | | match details | ||
| 05.05.08 | 1/4 | Katarzyna Piter | Lenka Jurikova | 6-1, 6-1 | | match details | ||
| 24.03.08 | 1/4 | Katarzyna Piter | Simona Dobra | 6-2, 6-4 | | match details |  Cairo | Clay |
| 24.03.08 | 1/2 | Katarzyna Piter | Oksana Kalashnikova | 6-4, 6-1 | | match details | ||
| 24.03.08 | 1st round | Katarzyna Piter | Nadege Vergos | 3-6, 6-2, 6-1 | | match details | ||
| 24.03.08 | fin | Katarzyna Piter | Bibiane Schoofs | 6-1, 6-3 | | match details | ||
| 24.03.08 | 2nd round | Katarzyna Piter | Fatma Al Nabhani | 6-3, 6-3 | | match details | ||
| 17.03.08 | fin | Katarzyna Piter | Irina-Camelia Begu | 7-67, 6-4 | | match details | Ain Alsoukhna | Clay |
| 17.03.08 | 2nd round | Katarzyna Piter | Virag Nemeth | 6-0, 7-5 | | match details | ||
| 17.03.08 | 1/4 | Katarzyna Piter | Hanne Skak Jensen | 4-6, 7-65, 6-2 | | match details | ||
| 17.03.08 | 1/2 | Katarzyna Piter | Katerina Avdiyenko | 7-5, 6-4 | | match details | ||
| 17.03.08 | 1st round | Katarzyna Piter | Sylwia Zagorska | 6-4, 6-3 | | match details | ||
| 10.03.08 | 1st round | Katarzyna Piter | Nihal Tarek-Saleh | 6-1, 6-4 | | match details | Cairo | Clay |
| 10.03.08 | 2nd round | Hanne Skak Jensen | Katarzyna Piter | 3-6, 7-67, 6-2 | | match details | ||
| 13.08.07 | 1/2 | Katarzyna Piter | Leonie Mekel | 6-0, 3-6, 6-2 | | match details | Bielefeld | Clay |
| 13.08.07 | 1st round | Katarzyna Piter | Antonia Matic | 6-4, 1-6, 6-4 | | match details | ||
| 13.08.07 | fin | Katarzyna Piter | Dominice Ripoll | 3-6, 6-3, 6-4 | | match details | ||
| 13.08.07 | 2nd round | Katarzyna Piter | Franziska Goetz | 6-1, 6-2 | | match details | ||
| 13.08.07 | 1/4 | Katarzyna Piter | Michaela Pochabova | 6-4, 6-4 | | match details | ||
| 09.07.07 | 2nd round | Anna Korzeniak | Katarzyna Piter | 6-3, 6-1 | | match details | Torun | Clay |
| 09.07.07 | 1st round | Katarzyna Piter | Natalia Kolat | 2-6, 6-4, 7-61 | | match details | ||
| 03.06.07 | 1st round | Klaudia Boczova | Katarzyna Piter | 6-74, 7-5, 7-5 | | match details | French Open | Clay |
| 14.05.07 | 1/4 | Katarzyna Piter | Martina Balogova | 6-4, 6-4 | | match details | Michalovce | Clay |
| 14.05.07 | 1/2 | Katarzyna Piter | Monika Kochanova | 7-61, 6-4 | | match details | ||
| 14.05.07 | 1st round | Katarzyna Piter | Lenka Wienerova | 6-75, 6-3, 6-3 | | match details | ||
| 14.05.07 | 2nd round | Katarzyna Piter | Karolina Nowak | 6-0, 1-0, Karolina Nowak - retired | | match details | ||
| 14.05.07 | fin | Kristina Kucova | Katarzyna Piter | 2-6, 6-3, 6-4 | | match details | ||
| 07.05.07 | 1st round | Sandra Martinovic | Katarzyna Piter | 6-3, 0-6, 6-3 | | match details | Warsaw | Clay |
| 30.04.07 | 1st round | Nadezda Petrova | Katarzyna Piter | 6-3, 7-5 | | match details | Warsaw | Clay |
| 07.08.06 | 1st round | Katarzyna Piter | Karolyn Grymel | 6-2, 6-2 | | match details | Gdynia | Clay |
| 07.08.06 | 2nd round | Radana Holusova | Katarzyna Piter | 6-1, 6-2 | | match details | ||
| 29.05.06 | 1st round | Katarzyna Piter | Klaudia Jans-Ignacik | 6-3, 6-3 | | match details | Olecko | Clay |
| 29.05.06 | 1/4 | Julija Gotovskyte | Katarzyna Piter | 2-6, 6-1, 6-0 | | match details | ||
| 29.05.06 | 2nd round | Katarzyna Piter | Natalia Kolat | 6-4, 6-4 | | match details | ||
| 08.05.06 | 1st round | Irina Kuzmina | Katarzyna Piter | 6-1, 6-1 | | match details | Warsaw | Clay |