Stadium: Court 1 Round: 28 Ground: Hardcourt indoor
| ATP Moscow MD | 2021/10/21 12:55 | Bopanna R / Qureshi A v Ivashka/Martinez | 6-7,7-5,8-10 |
| ATP Moscow MD | 2021/10/18 08:00 | Djere/Pella v Ivashka/Martinez | 5-7,7-6,6-10 |
| ATP Moscow MD | 2021/10/21 11:00 | Brkic T / Cacic N v Inglot/Skupski | 7-6,5-7,10-8 |
| ATP Moscow MD | 2021/10/18 11:00 | Brkic T / Cacic N v Bublik/Mannarino | 6-2,6-1 |
| ATP Sofia MD | 2021/10/01 09:00 | Gonzalez/Molteni v Brkic T / Cacic N | 6-7,6-2,10-4 |
| ATP Sofia MD | 2021/09/29 10:40 | Golubev A / Nedovyesov A v Brkic T / Cacic N | 3-6,7-6,7-10 |
| ATP Metz MD | 2021/09/24 13:35 | Nys/Rinderknech v Brkic T / Cacic N | 6-3,7-6 |
| ATP Metz MD | 2021/09/23 14:10 | Reese/Verbeek v Brkic T / Cacic N | 3-6,3-6 |
| ATP Metz MD | 2021/09/22 10:00 | Giron/Olivetti v Brkic T / Cacic N | 4-6,7-6,1-10 |
| US Open MD | 2021/09/04 19:20 | Golubev/Mies v Brkic T / Cacic N | 7-5,6-2 |