Name: Kayla Day
Country: USA
Birthdate: 28.09.99, 24 years
WTA ranking: 86
TOP ranking's position: 84 (01.04.24, 84000 points)
Points: 844
Prize money: 860655 $
Matches total: 418
Win: 243
%: 58.13 %
Country: USA
Birthdate: 28.09.99, 24 years
WTA ranking: 86
TOP ranking's position: 84 (01.04.24, 84000 points)
Points: 844
Prize money: 860655 $
Matches total: 418
Win: 243
%: 58.13 %
| year | summary | Hard | Clay | I. hard | Carpet | Grass | Acrylic |
| 2024 | 7/11 | 2/9 | 5/2 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2023 | 41/25 | 22/15 | 18/7 | 0/2 | 0/0 | 1/1 | 0/0 |
| 2022 | 41/22 | 26/15 | 13/6 | 2/1 | 0/0 | 0/0 | 0/0 |
| 2021 | 18/12 | 12/7 | 6/5 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2020 | 20/11 | 6/5 | 14/4 | 0/2 | 0/0 | 0/0 | 0/0 |
| 2019 | 18/20 | 11/14 | 7/6 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2018 | 11/23 | 9/14 | 1/8 | 1/1 | 0/0 | 0/0 | 0/0 |
| 2017 | 29/24 | 12/13 | 10/6 | 4/3 | 0/0 | 3/2 | 0/0 |
| 2016 | 46/18 | 26/9 | 16/8 | 0/0 | 0/0 | 4/1 | 0/0 |
| 2015 | 11/7 | 7/4 | 3/2 | 0/0 | 0/0 | 1/1 | 0/0 |
| 2014 | 1/2 | 1/2 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| TOTAL | 243/175 | 134/107 | 93/54 | 7/9 | 0/0 | 9/5 | 0/0 |
| perc. % | 58.13 % | 55.6 % | 63.27 % | 43.75 % | 0 % | 64.29 % | 0 % |
Kayla Day / scheduled / last
| 19.04.24 | 1/4 | Kayla Day | Berfu Cengiz | match details |  W75 Chiasso | Clay |
Kayla Day form / year 2023 / surface: Clay
Kayla Day / year 2023 / surface: Clay
| 03.06.23 | 3rd round | Anna Schmiedlova | Kayla Day | 6-1, 6-3 |  | match details |  Paris | Clay |
| 01.06.23 | 2nd round | Kayla Day | Madison Keys | 6-2, 4-6, 6-4 |  | match details | ||
| 29.05.23 | 1st round | Kayla Day | Kristina Mladenovic | 7-5, 6-1 | | match details | ||
| 25.05.23 | qual. | Kayla Day | Elina Avanesyan | 5-7, 6-4, 7-67 | | match details | ||
| 24.05.23 | q 2 | Kayla Day | Miriam Bianca Bulgaru | 6-4, 6-1 | | match details | ||
| 22.05.23 | q 1 | Kayla Day | Dalila Jakupovic | 6-1, 6-1 | | match details | ||
| 13.05.23 | 1/2 | Yuliia Starodubtseva | Kayla Day | 3-6, 6-2, 6-1 | | match details |  W60 Naples | Clay |
| 12.05.23 | 1/4 | Kayla Day | Astra Sharma | 6-2, 6-3 | | match details | ||
| 11.05.23 | 2nd round | Kayla Day | Christina Rosca | 6-1, 6-0 | | match details | ||
| 10.05.23 | 1st round | Kayla Day | Noelia Zeballos | 6-0, 6-1 | | match details | ||
| 07.05.23 | fin | Kayla Day | Ann Li | 6-2, 6-2 | | match details | W100 Bonita | Clay |
| 06.05.23 | 1/2 | Kayla Day | Caroline Dolehide | 7-65, 1-6, 6-0 | | match details | ||
| 05.05.23 | 1/4 | Kayla Day | Marcela Zacarias | 7-5, 6-3 | | match details | ||
| 04.05.23 | 2nd round | Kayla Day | Katarzyna Kawa | 6-2, 6-2 | | match details | ||
| 03.05.23 | 1st round | Kayla Day | Emma Bardet | 6-2, 6-1 | | match details | ||
| 28.04.23 | 1/4 | Emma Navarro | Kayla Day | 6-3, 6-1 | | match details | W60 Charlottesville | Clay |
| 27.04.23 | 2nd round | Kayla Day | Allie Kiick | 6-1, 6-1 | | match details | ||
| 26.04.23 | 1st round | Kayla Day | Makenna Jones | 6-2, 6-2 | | match details | ||
| 20.04.23 | 2nd round | Nao Hibino | Kayla Day | 6-1, 6-2 | | match details | W100 Charleston | Clay |
| 19.04.23 | 1st round | Kayla Day | En Shuo Liang | 6-2, 6-1 | | match details | ||
| 12.04.23 | 1st round | Francesca Di Lorenzo | Kayla Day | 6-4, 6-1 | | match details | W25 Boca | Clay |
| 03.04.23 | 1st round | Sachia Vickery | Kayla Day | 6-4, 6-2 | | match details | Charleston | Clay |
| 02.04.23 | qual. | Kayla Day | Ann Li | 6-2, 6-4 | | match details | ||
| 01.04.23 | q 1 | Kayla Day | Gabriela Lee | 6-2, 7-65 | | match details | ||
| 18.01.23 | 1st round | Katarzyna Kawa | Kayla Day | 6-3, 1-6, 7-65 | | match details | W60 Vero | Clay |