Stadium: CENTER COURT Round: 26 Ground: Hardcourt indoor
| Challenger Heilbronn MD | 2021/05/12 13:30 | Matos/M R Alves v Sabanov/Sabanov | 6-3,6-0 |
| Challenger Prague MD | 2021/05/08 12:50 | Polmans/Stakhovsky v Sabanov/Sabanov | 6-3,6-4 |
| Challenger Prague MD | 2021/05/07 09:00 | Sabanov/Sabanov v Drzewiecki/Majchrzak | 6-2,6-2 |
| Challenger Prague MD | 2021/05/06 10:45 | King/Reese v Sabanov/Sabanov | 6-7,5-7 |
| Challenger Prague MD | 2021/05/04 15:40 | Walkow/Zielinski v Sabanov/Sabanov | 6-3,3-6,5-10 |
| ATP Belgrade MD | 2021/04/24 13:00 | Behar/Escobar v Sabanov/Sabanov | 3-6,6-7 |
| ATP Belgrade MD | 2021/04/23 14:15 | Sabanov/Sabanov v Berrettini/Vavassori | 7-6,6-3 |
| ATP Belgrade MD | 2021/04/21 14:25 | Bedene/Sharan v Sabanov/Sabanov | 1-6,3-6 |
| 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 |
| Challenger Belgrade MD | 2021/04/17 12:10 | Duran/Molteni v Brkic/Cacic | 6-4,6-4 |
| Challenger Belgrade MD | 2021/04/16 17:15 | Brkic/Cacic v Bagnis/Cerundolo | 6-0,7-6 |