Stadium: TennisPoint Court Round: 26 Ground: Grass
| ATP Halle MD | 2021/06/14 10:00 | Brkic/Cacic v Brown/Struff | 4-6,6-4,10-7 |
| French Open MD | 2021/06/08 11:45 | Herbert/Mahut v Brkic/Cacic | 7-6,6-1 |
| French Open MD | 2021/06/05 09:00 | Bolelli/Gonzalez v Brkic/Cacic | 4-6,4-6 |
| French Open MD | 2021/06/03 14:10 | Brkic/Cacic v Granollers/Zeballos | 6-3,3-6,6-3 |
| French Open MD | 2021/06/02 16:05 | Popyrin/Thompson v Brkic/Cacic | 5-7,7-6,3-6 |
| ATP Belgrade MD | 2021/05/23 15:20 | Sabanov/Sabanov v Brkic/Cacic | 4-6,6-3,10-8 |
| ATP Geneva MD | 2021/05/20 12:15 | Brkic/Cacic v Bolelli/Gonzalez | 3-6,6-7 |
| ATP Geneva MD | 2021/05/19 10:30 | Marach/Pavic v Brkic/Cacic | 6-7,2-6 |
| French Open MD | 2021/06/08 09:00 | Krawietz/Tecau v Cabal/Farah | 2-6,7-6,5-7 |
| French Open MD | 2021/06/05 10:35 | Murray/Soares v Krawietz/Tecau | 3-6,6-3,3-6 |
| French Open MD | 2021/06/04 11:15 | Lu/Nishioka v Krawietz/Tecau | 3-6,2-6 |
| French Open MD | 2021/06/01 09:00 | Behar/Escobar v Krawietz/Tecau | 3-6,6-3,6-7 |
| ATP Rome MD | 2021/05/14 11:20 | Krawietz/Tecau v Peers/Venus | 6-7,5-7 |
| ATP Rome MD | 2021/05/13 13:25 | Krawietz/Tecau v Broady/Murray | 6-3,6-4 |
| ATP Rome MD | 2021/05/11 13:15 | Krawietz/Tecau v Cilic/Melo | 6-4,6-2 |
| ATP Madrid MD | 2021/05/06 11:00 | Krawietz/Tecau v Dodig/Polasek | 4-6,7-6,7-10 |