Stadium: Estadio Akron de Tenis Round: 4 Ground: Hardcourt indoor
| 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 | Krejcikova/Siniakova v Hsieh/Mertens | 6-3,6-1 |
| WTA Finals WD | 2021/11/11 21:45 | Hsieh/Mertens v Guarachi/Krawczyk | 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 | Aoyama/Shibahara 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 Golubic/Teichmann | 6-4,3-6,10-6 |
| WTA Finals WD | 2021/11/14 04:10 | Guarachi/Krawczyk v Fichman/Olmos | 0-6,6-3,11-9 |
| WTA Finals WD | 2021/11/12 03:10 | Krejcikova/Siniakova 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 Kasatkina/Kontaveit | 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 Aoyama/Shibahara | 3-6,3-6 |
| WTA Eastbourne WD | 2021/06/23 11:30 | Kudermetova/Vesnina v Fichman/Olmos | 6-7,4-6 |