Stadium: Court 17 Round: 24 Ground: Grass
| ATP Mallorca MD | 2021/06/22 14:40 | Djokovic/Gomez-Herrera v Brkic/Cacic | 5-7,6-4,13-11 |
| ATP Halle MD | 2021/06/16 09:00 | Brkic/Cacic v Krawietz/Tecau | 6-7,3-6 |
| 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 |