Estádio: Court 1 Round: 29 Ground: Clay
| Challenger - Belgrado - Duplas Masculinas | 2021/04/16 15:20 | Erlich/Vasilevski v Duran/Molteni | 6-3,5-7,9-11 |
| Challenger - Belgrado - Duplas Masculinas | 2021/04/15 18:40 | Duran/Molteni v Begemann/Vavassori | 6-2,6-4 |
| Challenger - Belgrado - Duplas Masculinas | 2021/04/14 16:25 | Monroe/Smith v Duran/Molteni | 7-5,4-6,0-10 |
| ATP - Santiago - Duplas Masculinas | 2021/03/09 17:00 | Duran/Molteni v Jarry/Mayer | 6-3,3-6,8-10 |
| ATP - Buenos Aires - Duplas Masculinas | 2021/03/03 22:20 | Duran/Molteni v Koepfer/Sousa | 2-6,1-6 |
| ATP - Córdova - Duplas Masculinas | 2021/02/27 19:30 | Arneodo/Paire v Duran/Molteni | 6-3,3-6,10-6 |
| ATP - Córdova - Duplas Masculinas | 2021/02/25 20:50 | Delbonis/Londero v Duran/Molteni | 7-6,6-7,10-12 |
| ATP - Córdova - Duplas Masculinas | 2021/02/24 17:30 | Duran/Molteni v Demoliner/Gonzalez | 6-0,6-2 |
| Challenger - Belgrado - Duplas Masculinas | 2021/04/16 17:15 | Brkic/Cacic v Bagnis/Cerundolo | 6-0,7-6 |
| Challenger - Belgrado - Duplas Masculinas | 2021/04/15 17:00 | Jebavy/Zelenay v Brkic/Cacic | 6-7,3-6 |
| Challenger - Belgrado - Duplas Masculinas | 2021/04/15 09:00 | Troicki/Zekic v Brkic/Cacic | 4-6,2-6 |
| ATP - Marbella - Duplas Masculinas | 2021/04/11 10:00 | Behar/Escobar v Brkic/Cacic | 6-2,6-4 |
| ATP - Marbella - Duplas Masculinas | 2021/04/09 12:00 | Arevalo/Middelkoop v Brkic/Cacic | 4-6,4-6 |
| ATP - Marbella - Duplas Masculinas | 2021/04/07 15:15 | Brkic/Cacic v Daniell/Oswald | 4-6,7-6,11-9 |
| ATP - Marbella - Duplas Masculinas | 2021/04/06 13:55 | Brkic/Cacic v Arends/Pel | 1-6,6-0,10-5 |
| ATP - Santiago - Duplas Masculinas | 2021/03/10 20:00 | Bolelli/Gonzalez v Brkic/Cacic | 7-6,6-3 |