ITF - W60 Evansville 07/23 15:00 26 Kayla Day v Elizabeth Mandlik Walkover
ITF - W60 Evansville 07/20 13:30 25 [234] Kayla Day v Ellie Douglas [319] 6-2,7-6
ITF - W25 Wichita 06/26 16:45 29 [265] Kayla Day v Elizabeth Mandlik [323] 3-6,3-6
ITF - W25 Wichita 06/25 16:55 28 Kayla Day v Samantha Crawford 6-4,3-6,6-4
ITF - W25 Wichita 06/24 16:20 27 Kayla Day v Jenna Defalco Retired
ITF - W25 Wichita 06/23 15:00 26 Kayla Day v Himeno Sakatsume 6-4,6-0
ITF - W25 Wichita 06/22 14:00 25 Kayla Day v Stacey Fung 6-4,6-2
ITF - W60 Orlando 05/28 13:55 28 [265] Sachia Vickery v Kayla Day [334] 7-5,6-2
ITF - W60 Orlando 05/27 14:00 27 [203] Maria Lourdes Carle v Kayla Day [334] 3-6,3-6
ITF - W60 Orlando 05/26 15:35 26 [334] Kayla Day v Grace Min [179] 6-2,6-3
ITF - W60 Orlando 05/25 19:20 25 Sofia Shapatava v Kayla Day 4-6,1-6
ITF - W25 Naples 05/22 13:55 29 [293] Ana Sofia Sanchez v Kayla Day [334] 1-6,1-6
ITF - W25 Naples 05/21 13:20 28 [326] Kayla Day v Elizabeth Halbauer [498] 4-6,6-2,6-1
ITF - W25 Naples 05/20 13:30 27 Alexis Blokhina v Kayla Day 1-6,2-6
ITF - W25 Naples 05/19 16:05 26 [325] Chiara Scholl v Kayla Day [326] 3-6,1-6
ITF - W25 Naples 05/18 16:20 25 Shilin Xu v Kayla Day 4-6,1-6
ITF - W100 Bonita Springs 05/06 16:50 27 [335] Kayla Day v Xiyu Wang [123] 1-6,5-7
ITF - W100 Bonita Springs 05/05 17:25 26 [335] Kayla Day v Alycia Parks [163] 6-1,7-6
ITF - W100 Bonita Springs 05/04 18:15 25 [153] Mirjam Bjorklund v Kayla Day [335] 2-6,2-6
ITF - W100 Bonita Springs 05/03 16:20 54 Kayla Day v Erica Oosterhout 7-6,6-3
ITF - W100 Bonita Springs 05/02 17:05 54 Kayla Day v Victoria Osuigwe 6-1,6-3
ITF - W100 Charleston 04/25 16:30 54 Alexa Graham v Kayla Day Retired
ITF - W100 Charleston 04/25 15:40 54 Maegan Manasse v Kayla Day Cancelled
ITF - W60 Charlottesville 04/21 13:55 26 [171] Robin Anderson v Kayla Day [343] 6-4,1-6,7-6
ITF - W60 Charlottesville 04/20 18:40 25 [343] Kayla Day v Olga Govortsova [177] 6-3,6-2
ITF - W60 Charlottesville 04/19 17:10 54 Kayla Day v Anastasia Nefedova 6-2,6-0
ITF - W60 Charlottesville 04/18 16:00 54 [343] Kayla Day v Anna S Rogers [280] 6-3,6-3
ITF - W100 Palm Harbor 04/12 15:40 54 [303] Elvina Kalieva v Kayla Day [345] 7-6,6-2
ITF - W100 Palm Harbor 04/11 18:05 54 [307] Chiara Scholl v Kayla Day [345] 1-6,3-6
ITF - W60 Canberra 03/30 01:35 25 [349] Kayla Day v Ankita Raina [323] 2-6,3-6

Wikipedia - Kayla Day

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. As a junior, she won one junior Grand Slam title, at the 2016 US Open. There, she finished runner-up in the doubles event, partnering with Caroline Dolehide.

Despite having success as junior, Day has mostly spent time playing on the ITF Women's Circuit instead of WTA Tour, due to her ranking. She officially turned professional in 2017, at the Australian Open.