World: Olympic Games - Doubles - Main |
| Quarter-finals | Pigossi L./Stefani L. | Mattek-Sands B./Pegula J. | 2:1 (1:6, 6:3, 10:6) | details | 28.07.2021 |
| 1/8-finals | Cornet A./Ferro F. | Mattek-Sands B./Pegula J. | 0:2 (1:6, 4:6) | details | 27.07.2021 |
| 1/16-finals | Linette M./Rosolska A. | Mattek-Sands B./Pegula J. | 0:2 (1:6, 3:6) | details | 25.07.2021 |
Italy: Rome - Doubles - Main |
| 1/16-finals | Mattek-Sands B./Pegula J. | Fichman S./Olmos G. | 1:2 (6:3, 2:6, 3:10) | details | 11.05.2021 |
| 1/16-finals | Mattek-Sands B./Pegula J. | Barty A./Brady J. | CAN. | details | 11.05.2021 |
United Arab Emirates: Dubai - Doubles - Main |
| Semi-finals | Mattek-Sands B./Pegula J. | Guarachi A./Jurak Schreiber D. | 0:2 (4:6, 3:6) | details | 12.03.2021 |
| Quarter-finals | Mattek-Sands B./Pegula J. | Carter H./Stefani L. | 2:0 (6:4, 6:2) | details | 11.03.2021 |
| 1/8-finals | Mertens E./Sabalenka A. | Mattek-Sands B./Pegula J. | 1:2 (6:3, 62:7, 6:10) | details | 10.03.2021 |
| 1/16-finals | Mattek-Sands B./Pegula J. | Ninomiya M./Voracova R. | 2:0 (6:4, 7:63) | details | 09.03.2021 |
Qatar: Doha - Doubles - Main |
| Quarter-finals | Mattek-Sands B./Pegula J. | Melichar-Martinez N./Schuurs D. | 0:2 (1:6, 1:6) | details | 03.03.2021 |
| 1/8-finals | Mattek-Sands B./Pegula J. | Rybakina E./Shvedova Y. | CAN. | details | 02.03.2021 |
| 1/8-finals | Mattek-Sands B./Pegula J. | Amanmuradova A./Liang E. S. | 2:0 (6:1, 6:3) | details | 02.03.2021 |