Stadium: Court 5 Round: 25 Ground: Clay
| 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 |
| ATP Munich MD | 2021/04/28 10:20 | Brkic/Cacic v Ebden/Smith | 6-7,6-7 |
| ATP Belgrade MD | 2021/04/23 11:00 | Behar/Escobar v Brkic/Cacic | 6-3,6-4 |
| ATP Belgrade MD | 2021/04/22 10:00 | Brkic/Cacic v Bolelli/Gonzalez | 0-6,7-6,10-8 |
| ATP Belgrade MD | 2021/04/21 11:00 | Arevalo/Middelkoop v Brkic/Cacic | 4-6,6-7 |
| French Open MD | 2021/06/01 15:45 | Hurkacz/Walkow v Granollers/Zeballos | 1-6,1-6 |
| ATP Rome MD | 2021/05/14 16:40 | Granollers/Zeballos v Ram/Salisbury | 6-7,6-3,2-10 |
| ATP Rome MD | 2021/05/13 13:20 | Granollers/Zeballos v Kubot/Skugor | 7-5,4-6,12-10 |
| ATP Rome MD | 2021/05/12 13:40 | Granollers/Zeballos v Molteni/Schwartzman | 6-3,7-5 |
| ATP Madrid MD | 2021/05/09 13:30 | Granollers/Zeballos v Mektic/Pavic | 1-6,6-3,10-8 |
| ATP Madrid MD | 2021/05/07 14:00 | Granollers/Zeballos v Herbert/Mahut | 7-6,6-2 |
| ATP Madrid MD | 2021/05/05 10:55 | Granollers/Zeballos v Khachanov/Rublev | 6-3,6-2 |
| ATP Barcelona MD | 2021/04/20 13:40 | Krawietz/Tecau v Granollers/Zeballos | 7-6,7-6 |