Stadium: Stadium 9 Round: 14 Ground: Hardcourt outdoor
| US Open Women | 2021/08/25 19:35 | Elvina Kalieva v Mayo Hibi | 6-3,6-4 |
| ITF W100 Landisville | 2021/08/12 21:45 | Mayo Hibi v Caty McNally | 4-6,6-7 |
| ITF W100 Landisville | 2021/08/11 15:45 | Caroline Dolehide v Mayo Hibi | 4-6,4-6 |
| ITF W100 Landisville | 2021/08/10 15:35 | Mariam Bolkvadze v Mayo Hibi | 3-6,7-6,6-10 |
| ITF W100 Landisville | 2021/08/09 16:50 | Sophia Whittle v Mayo Hibi | 6-1,6-7,6-10 |
| WTA San Jose | 2021/07/31 20:45 | Ellen Perez v Mayo Hibi | 6-2,6-7,7-5 |
| ITF W25 Evansville | 2021/07/18 16:00 | Mayo Hibi v Rebecca Marino | 3-6,6-3,0-6 |
| ITF W25 Evansville | 2021/07/16 17:05 | Mayo Hibi v Catherine Harrison | 6-1,6-1 |
| WTA Chicago | 2021/09/27 14:00 | Andrea Petkovic v Olga Govortsova | 6-2,6-2 |
| WTA Chicago | 2021/09/26 15:00 | Olga Govortsova v Lizette Cabrera | 4-6,0-6 |
| WTA Chicago | 2021/09/25 18:30 | Olga Govortsova v Adesuwa Osabuohien | 6-3,6-2 |
| US Open Women | 2021/08/24 16:40 | Reese Brantmeier v Olga Govortsova | 6-2,6-3 |
| WTA Belgrade | 2021/07/26 12:35 | Olga Govortsova v Susan Bandecchi | 6-7,3-6 |
| WTA Gdynia | 2021/07/20 12:25 | Tamara Korpatsch v Olga Govortsova | 1-6,7-5,7-5 |
| WTA Lausanne | 2021/07/13 10:30 | Olga Govortsova v Anna Blinkova | 6-2,4-6,2-6 |
| WTA Bastad | 2021/07/10 14:10 | Olga Govortsova v Nuria Parrizas-Diaz | 2-6,2-6 |