Stadium: Court 5 Round: 14 Ground: Hardcourt outdoor
| ITF W60 San Bartolome De Tirajana | 2021/08/17 14:00 | Guttierez Carrasco, Maria v Yuki Naito | 6-2,3-6,6-1 |
| Open de France - Femmes | 2021/05/24 08:30 | Tamara Korpatsch v Yuki Naito | 6-4,6-3 |
| Billie Jean King Cup | 2021/04/17 08:00 | Elina Svitolina v Yuki Naito | 6-2,4-6,7-6 |
| Billie Jean King Cup | 2021/04/16 09:45 | Marta Kostyuk v Yuki Naito | 6-3,6-3 |
| ITF W60 Bellinzona | 2021/04/07 12:20 | Lucia Bronzetti v Yuki Naito | 2-6,6-4,7-6 |
| ITF W25 Buenos Aires | 2021/03/28 14:00 | Carolina Alves v Yuki Naito | 6-1,4-6,3-6 |
| ITF W25 Buenos Aires | 2021/03/27 14:30 | Yuki Naito v Francesca Jones | 1-6,7-6,6-2 |
| ITF W25 Buenos Aires | 2021/03/26 19:00 | Yvonne Cavalle-Reimers v Yuki Naito | 2-6,3-6 |
| WTA Cincinnati | 2021/08/14 20:20 | Ahn, Kristie v Lauren Davis | 6-4,2-6,2-6 |
| WTA Montreal | 2021/08/08 16:00 | Caroline Garcia v Ahn, Kristie | 7-6,6-3 |
| WTA Montreal | 2021/08/07 16:10 | Melichar, Nicole v Ahn, Kristie | 6-1,5-7,0-6 |
| WTA San Jose | 2021/07/31 18:35 | Ahn, Kristie v Na-Lae Han | 3-6,6-2,0-6 |
| Wimbledon Women | 2021/06/30 18:15 | Ahn, Kristie v Sloane Stephens | 5-7,3-6 |
| Wimbledon Women | 2021/06/28 18:05 | Ahn, Kristie v Heather Watson | 2-6,7-6,8-6 |
| Wimbledon Women | 2021/06/25 10:30 | Ahn, Kristie v Niculescu, Monica | 5-7,1-6 |
| Wimbledon Women | 2021/06/24 10:00 | Ahn, Kristie v Ekaterine Gorgodze | 6-2,6-3 |