Stadium: Court 1 Round: 26 Ground: Clay
| ATP Marbella MD | 2021/04/09 12:00 | Arevalo/Middelkoop v Brkic T / Cacic N | 4-6,4-6 |
| ATP Marbella MD | 2021/04/09 12:00 | Arevalo/Middelkoop v Brkic T / Cacic N | 4-6,4-6 |
| ATP Marbella MD | 2021/04/08 11:40 | Gonzalez S / Reyes-Varela M-A v Arevalo/Middelkoop | 3-6,2-6 |
| ATP Marbella MD | 2021/04/07 13:30 | Erlich J / Vasilevski A v Arevalo/Middelkoop | 4-6,6-7 |
| ATP - Dubaï - Doubles Hommes | 2021/03/15 13:00 | Arevalo/Middelkoop v Dodig I / Polasek F | 6-3,5-7,13-15 |
| ATP - Dubaï - Doubles Hommes | 2021/03/14 11:00 | Arevalo/Middelkoop v Sonego L / Vavassori A | 6-7,5-7 |
| ATP - Dubaï - Doubles Hommes | 2021/03/13 14:05 | Arevalo/Middelkoop v Gabashvili/Popko | 6-7,6-1,10-8 |
| ATP - Doha - Doubles Hommes | 2021/03/09 16:15 | Arevalo/Middelkoop v Mektic/Pavic | 1-6,3-6 |
| ATP - Montpellier - Doubles Hommes | 2021/02/25 13:15 | Lammons/Withrow v Arevalo/Middelkoop | 6-4,7-6 |
| Challenger Belgrade MD | 2021/04/17 12:10 | Duran G / Molteni A v Brkic T / Cacic N | 6-4,6-4 |
| Challenger Belgrade MD | 2021/04/16 17:15 | Brkic T / Cacic N v Bagnis/Cerundolo | 6-0,7-6 |
| Challenger Belgrade MD | 2021/04/15 17:00 | Jebavy R / Zelenay I v Brkic T / Cacic N | 6-7,3-6 |
| Challenger Belgrade MD | 2021/04/15 09:00 | Troicki/Zekic v Brkic T / Cacic N | 4-6,2-6 |
| ATP Marbella MD | 2021/04/11 10:00 | Behar A / Escobar G v Brkic T / Cacic N | 6-2,6-4 |
| ATP Marbella MD | 2021/04/09 12:00 | Arevalo/Middelkoop v Brkic T / Cacic N | 4-6,4-6 |
| ATP Marbella MD | 2021/04/07 15:15 | Brkic T / Cacic N v Daniell/Philipp Oswald | 4-6,7-6,11-9 |
| ATP Marbella MD | 2021/04/06 13:55 | Brkic T / Cacic N v Arends S / Pel D | 1-6,6-0,10-5 |