Kayla Day

Kayla Day
Day at the 2023 French Open
Country (sports) United States
ResidenceLake Nona, Orlando, Florida
Born (1999-09-28) September 28, 1999
Santa Barbara, California
Height1.73 m (5 ft 8 in)
Turned pro2017
PlaysLeft (two-handed backhand)
CoachPat Cash
Prize moneyUS$ 1,286,252
Singles
Career record234–189
Highest rankingNo. 84 (1 April 2024)
Current rankingNo. 195 (9 February 2026)
Grand Slam singles results
Australian Open1R (2017, 2024)
French Open3R (2023)
WimbledonQ2 (2023, 2024)
US Open2R (2016)
Doubles
Career record38–38
Highest rankingNo. 133 (29 January 2018)
Current rankingNo. 711 (9 February 2026)
Grand Slam doubles results
Australian Open1R (2024)
US Open2R (2017)
Last updated on: 13 February 2026.

Kayla Day (born September 28, 1999) is an American professional tennis player. She has a career-high singles ranking of world No. 84 by the WTA reached in April 2024. As a junior, she won the 2016 US Open in singles and was a finalist in doubles, partnering with Caroline Dolehide.

Day plays mostly on the ITF Women's Circuit and the WTA 125 Challenger Tour.