Stadium: Estadio Akron de Tenis Round: 4 Ground: Hardcourt outdoor
| WTA Rome WD | 2021/05/13 08:00 | Hsieh/Mertens v Fichman/Olmos | 6-1,4-6,4-10 |
| WTA Finals WD | 2021/11/13 22:25 | 크레이시코바 B / 시니아코바 K v Hsieh/Mertens | 6-3,6-1 |
| WTA Finals WD | 2021/11/11 21:45 | Hsieh/Mertens v Guarachi A / Krawczyk D | 7-6,6-2 |
| WTA Indian Wells WD | 2021/10/16 18:00 | Kudermetova/Rybakina v Hsieh/Mertens | 6-7,3-6 |
| WTA Indian Wells WD | 2021/10/14 20:00 | 아오야마 S / 시바하라 E v Hsieh/Mertens | 2-6,0-6 |
| WTA Indian Wells WD | 2021/10/13 01:00 | Fernandez/Gauff v Hsieh/Mertens | 5-7,4-6 |
| WTA Indian Wells WD | 2021/10/11 20:10 | Mattek-Sands/Swiatek v Hsieh/Mertens | 6-1,4-6,8-10 |
| WTA Indian Wells WD | 2021/10/09 01:00 | Anisimova/Yastremska v Hsieh/Mertens | 1-6,1-6 |
| WTA Chicago WD | 2021/09/29 19:45 | Hsieh/Mertens v 콜루비크 빅 / 테이치만 질 | 6-4,3-6,10-6 |
| WTA Finals WD | 2021/11/14 04:10 | Guarachi A / Krawczyk D v Fichman/Olmos | 0-6,6-3,11-9 |
| WTA Finals WD | 2021/11/12 03:10 | 크레이시코바 B / 시니아코바 K v Fichman/Olmos | 6-4,6-1 |
| WTA Indian Wells WD | 2021/10/10 18:00 | Fichman/Olmos v Ninomiya/Santamaria | 4-6,2-6 |
| WTA Indian Wells WD | 2021/10/07 02:50 | Fichman/Olmos v 카사트키나 D / 콘타베이트 A | 6-3,6-4 |
| WTA Chicago WD | 2021/09/28 15:00 | Peschke/Petkovic v Fichman/Olmos | 6-4,6-4 |
| Wimbledon Women WD | 2021/07/01 10:00 | Heisen/Peschke v Fichman/Olmos | 2-6,1-6 |
| WTA Eastbourne WD | 2021/06/24 10:00 | Fichman/Olmos v 아오야마 S / 시바하라 E | 3-6,3-6 |
| WTA Eastbourne WD | 2021/06/23 11:30 | Kudermetova/Vesnina v Fichman/Olmos | 6-7,4-6 |