Stadium: Court 1 Round: 27 Ground: Clay
| ATP Santiago MD | 2021/03/10 20:00 | Bolelli/Gonzalez v Brkic/Cacic | 7-6,6-3 |
| 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 |
| Challenger Belgrade MD | 2021/04/15 17:00 | Jebavy/Zelenay v Brkic/Cacic | 6-7,3-6 |
| Challenger Belgrade MD | 2021/04/15 09:00 | Troicki/Zekic v Brkic/Cacic | 4-6,2-6 |
| ATP Marbella MD | 2021/04/11 10:00 | Behar/Escobar v Brkic/Cacic | 6-2,6-4 |
| ATP Marbella MD | 2021/04/09 12:00 | Arevalo/Middelkoop v Brkic/Cacic | 4-6,4-6 |
| ATP Marbella MD | 2021/04/07 15:15 | Brkic/Cacic v Daniell/Oswald | 4-6,7-6,11-9 |
| ATP Belgrade MD | 2021/04/21 14:45 | Kecmanovic/Lajovic v Bolelli/Gonzalez | 4-6,4-6 |
| ATP Santiago MD | 2021/03/14 16:45 | Bolelli/Gonzalez v Delbonis/Munar | 7-6,6-4 |
| ATP Santiago MD | 2021/03/12 15:00 | Klaasen/Mclachlan v Bolelli/Gonzalez | 4-6,4-6 |
| ATP Santiago MD | 2021/03/11 18:40 | Bolelli/Gonzalez v Arneodo/Paire | 6-2,7-6 |
| ATP Santiago MD | 2021/03/10 20:00 | Bolelli/Gonzalez v Brkic/Cacic | 7-6,6-3 |
| ATP Buenos Aires MD | 2021/03/04 19:00 | Koepfer/Sousa v Bolelli/Gonzalez | 4-6,7-6,10-5 |
| ATP Buenos Aires MD | 2021/03/02 21:40 | D Acosta/Tirante v Bolelli/Gonzalez | 6-7,1-6 |
| Australian Open MD | 2021/02/15 03:45 | Bolelli/Gonzalez v Murray/Soares | 7-6,2-6,4-6 |