Stadium: Center Court Round: 29 Ground: Clay
| WTA - Saint-Malo - Doubles Femmes | 2021/05/07 09:30 | Carter H / Stefani L v Lechemia/Wachaczyk | 6-2,6-2 |
| WTA - Saint-Malo - Doubles Femmes | 2021/05/05 09:00 | Carter H / Stefani L v Heisen/Lister | 6-2,6-4 |
| WTA - Madrid - Doubles Femmes | 2021/04/30 14:10 | Mattek-Sands/Swiatek v Carter H / Stefani L | 2-6,6-3,10-6 |
| WTA - Stuttgart - Doubles Femmes | 2021/04/21 17:20 | Carter H / Stefani L v Kichenok N / Olaru R | 6-7,4-6 |
| WTA - Charleston - Doubles Femmes | 2021/04/06 16:55 | Bouzkova/Hradecka v Carter H / Stefani L | 6-2,6-4 |
| WTA - Miami - Doubles Femmes | 2021/04/04 19:30 | Aoyama/Shibahara v Carter H / Stefani L | 6-2,7-5 |
| WTA - Miami - Doubles Femmes | 2021/04/03 00:45 | Carter H / Stefani L v Dabrowski/Olmos | 2-6,6-3,10-8 |
| WTA - Miami - Doubles Femmes | 2021/03/30 17:00 | Carter H / Stefani L v Muhammad/Pegula | 6-4,6-1 |
| WTA - Saint-Malo - Doubles Femmes | 2021/05/07 12:20 | Sasnovich/Tauson v Christian K / Santamaria S | 6-1,4-6,8-10 |
| WTA - Saint-Malo - Doubles Femmes | 2021/05/05 13:20 | Kalashnikova O / Kudryavtseva A v Christian K / Santamaria S | 3-6,3-6 |
| WTA - Madrid - Doubles Femmes | 2021/04/29 13:45 | Perez/Zheng v Christian K / Santamaria S | 6-2,2-6,10-7 |
| WTA - Stuttgart - Doubles Femmes | 2021/04/19 13:00 | Barty/Brady v Christian K / Santamaria S | 6-3,6-1 |
| WTA - Charleston - Doubles Femmes | 2021/04/13 21:05 | Gumulya B / Rompies J v Christian K / Santamaria S | 7-6,3-6,12-10 |
| WTA St. Petersburg WD | 2021/03/21 10:30 | Kichenok N / Olaru R v Christian K / Santamaria S | 2-6,6-3,10-8 |
| WTA St. Petersburg WD | 2021/03/20 15:15 | Kalashnikova O / Kudryavtseva A v Christian K / Santamaria S | 7-5,4-6,4-10 |
| WTA St. Petersburg WD | 2021/03/18 12:20 | Vesnina/Zvonareva v Christian K / Santamaria S | 7-5,3-6,9-11 |