Stadium: TennisPoint Court Round: 26 Ground: Grass
| ATP Halle MD | 2021/06/14 10:00 | Brkic T / Cacic N v Brown D / Struff J-L | 4-6,6-4,10-7 |
| Open de France - Doubles Hommes | 2021/06/08 11:45 | Herbert P-H / Mahut N v Brkic T / Cacic N | 7-6,6-1 |
| Open de France - Doubles Hommes | 2021/06/05 09:00 | Bolelli/Gonzalez v Brkic T / Cacic N | 4-6,4-6 |
| Open de France - Doubles Hommes | 2021/06/03 14:10 | Brkic T / Cacic N v Granollers/Zeballos | 6-3,3-6,6-3 |
| Open de France - Doubles Hommes | 2021/06/02 16:05 | Popyrin/Thompson v Brkic T / Cacic N | 5-7,7-6,3-6 |
| ATP Belgrade MD | 2021/05/23 15:20 | Sabanov/Sabanov v Brkic T / Cacic N | 4-6,6-3,10-8 |
| ATP - Genève - Doubles Hommes | 2021/05/20 12:15 | Brkic T / Cacic N v Bolelli/Gonzalez | 3-6,6-7 |
| ATP - Genève - Doubles Hommes | 2021/05/19 10:30 | Marach O / Pavic M v Brkic T / Cacic N | 6-7,2-6 |
| Open de France - Doubles Hommes | 2021/06/08 09:00 | Krawietz/Tecau v Cabal / Farah | 2-6,7-6,5-7 |
| Open de France - Doubles Hommes | 2021/06/05 10:35 | Murray J / Soares B v Krawietz/Tecau | 3-6,6-3,3-6 |
| Open de France - Doubles Hommes | 2021/06/04 11:15 | Lu/Nishioka v Krawietz/Tecau | 3-6,2-6 |
| Open de France - Doubles Hommes | 2021/06/01 09:00 | Behar A / Escobar G v Krawietz/Tecau | 3-6,6-3,6-7 |
| ATP - Rome - Doubles Hommes | 2021/05/14 11:20 | Krawietz/Tecau v Peers J / Venus M | 6-7,5-7 |
| ATP - Rome - Doubles Hommes | 2021/05/13 13:25 | Krawietz/Tecau v Broady / Murray S. | 6-3,6-4 |
| ATP - Rome - Doubles Hommes | 2021/05/11 13:15 | Krawietz/Tecau v Cilic/Melo | 6-4,6-2 |
| ATP - Madrid - Doubles Hommes | 2021/05/06 11:00 | Krawietz/Tecau v Dodig I / Polasek F | 4-6,7-6,7-10 |