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: 419
Win: 243
%: 58 %
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: 419
Win: 243
%: 58 %
| year | summary | Hard | Clay | I. hard | Carpet | Grass | Acrylic |
| 2024 | 7/12 | 2/9 | 5/3 | 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 | 243/176 | 134/107 | 93/55 | 7/9 | 0/0 | 9/5 | 0/0 |
| perc. % | 58 % | 55.6 % | 62.84 % | 43.75 % | 0 % | 64.29 % | 0 % |
Kayla Day / scheduled / last
| no matches found |
Kayla Day form / year 2018 / surface: Hard
Kayla Day / year 2018 / surface: Hard
| 06.11.18 | 1st round | Lauren Davis | Kayla Day | 6-4, 6-2 |  | match details |  Las Vegas | Hard |
| 02.11.18 | 1/4 | Belinda Bencic | Kayla Day | 4-6, 6-2, 6-2 | | match details | Tyler | Hard |
| 01.11.18 | 2nd round | Kayla Day | Christina Mchale | 6-4, 7-63 |  | match details | ||
| 31.10.18 | 1st round | Kayla Day | Ann Li | 6-2, 7-5 | | match details | ||
| 27.10.18 | 1/4 | Allie Kiick | Kayla Day | 6-2, 7-5 | | match details | Macon | Hard |
| 25.10.18 | 2nd round | Kayla Day | Lauren Davis | 6-4, 6-4 | | match details | ||
| 24.10.18 | 1st round | Kayla Day | Claire Liu | 7-67, 6-4 | | match details | ||
| 18.10.18 | 2nd round | Paula Cristina Goncalves | Kayla Day | 6-4, 6-4 | | match details | Florence | Hard |
| 16.10.18 | 1st round | Kayla Day | Manon Arcangioli | 6-3, 6-3 | | match details | ||
| 02.10.18 | 1st round | Sofya Zhuk | Kayla Day | 6-3, 7-67 | | match details | Stockton | Hard |
| 26.09.18 | 1st round | Taylor Townsend | Kayla Day | 6-1, 6-4 | | match details | Templeton | Hard |
| 03.09.18 | qual. | Robin Anderson | Kayla Day | 2-6, 6-3, 7-65 | | match details | Chicago | Hard |
| 02.09.18 | q 1 | Kayla Day | Marie Bouzkova | 6-72, 6-3, 2-0, Marie Bouzkova - retired | | match details | ||
| 21.08.18 | q 1 | Jessica Pegula | Kayla Day | 6-3, 6-1 | | match details | New York | Hard |
| 08.03.18 | 1st round | Yanina Wickmayer | Kayla Day | 6-3, 6-2 | | match details | Indian Wells | Hard |
| 27.02.18 | 1st round | Arantxa Rus | Kayla Day | 4-6, 6-1, 6-0 | | match details |  Acapulco | Hard |
| 21.02.18 | 1st round | Lorraine M. Guillermo | Kayla Day | 6-3, 7-65 | | match details | Rancho Santa | Hard |
| 24.01.18 | 2nd round | Sofya Zhuk | Kayla Day | 1-6, 7-60, 7-5 | | match details | Newport Beach | Hard |
| 22.01.18 | 1st round | Kayla Day | Mariana Duque-Marino | 6-3, 7-64 | | match details | ||
| 14.01.18 | qual. | Magdalena Frech | Kayla Day | 6-3, 6-0 | | match details |  Melbourne | Hard |
| 13.01.18 | q 2 | Kayla Day | Xinyun Han | 7-65, 6-0 | | match details | ||
| 11.01.18 | q 1 | Kayla Day | Katie Boulter | 6-4, 6-71, 5-2, Katie Boulter - retired | | match details | ||
| 29.12.17 | q 1 | Sara Tomic | Kayla Day | 6-1, 6-1 | | match details | Brisbane | Hard |