Stadium: Court 1 Round: 27 Ground: Hardcourt indoor
| ATP Sofia MD | 2021/09/27 13:50 | Musetti/Vavassori v Demoliner/Matos | 3-6,6-7 |
| ATP Nur-Sultan MD | 2021/09/23 07:50 | Erlich J / Vasilevski A v Demoliner/Matos | 6-1,1-6,10-7 |
| 파이널, 플레이오프 | 2021/09/19 06:55 | Habib/Hassan v Demoliner/Matos | 2-6,6-3,6-7 |
| ATP Sofia MD | 2021/09/28 11:00 | Bopanna R / Qureshi A v Marach O / Oswald P | 2-6,7-6,7-10 |
| ATP Metz MD | 2021/09/22 13:20 | Marach O / Oswald P v Hurkacz/Zielinski | 3-6,4-6 |
| ATP Metz MD | 2021/09/21 13:40 | Marach O / Oswald P v 마헛 니 / 포스피실 바 | 6-4,6-3 |
| US Open MD | 2021/09/03 15:00 | Marach O / Oswald P v Erlich/Harris | 2-6,7-6,2-6 |
| ATP Winston-Salem MD | 2021/08/26 19:00 | Arevalo/Middelkoop v Marach O / Oswald P | 6-3,6-3 |
| ATP Winston-Salem MD | 2021/08/23 20:40 | Marach O / Oswald P v 길 S / 블리에겐 J | 7-6,5-7,10-4 |
| ATP Toronto MD | 2021/08/11 21:50 | Krawietz/Tecau v Marach O / Oswald P | 6-2,1-6,12-10 |
| ATP Toronto MD | 2021/08/09 19:55 | 베할 A / 에스코발 G v Marach O / Oswald P | 7-5,3-6,11-13 |