Stadium: Court 1 Round: 27 Ground: Hardcourt outdoor
| ATP Miami MD | 2021/03/28 17:30 | Herbert/Mahut v Kecmanovic/Qureshi | 6-4,4-6,3-10 |
| ATP Miami MD | 2021/03/26 19:55 | Melo/Rojer v Kecmanovic/Qureshi | 7-6,3-6,4-10 |
| ATP Miami MD | 2021/03/29 19:20 | Fritz/Isner v Mektic/Pavic | 4-6,4-6 |
| ATP Miami MD | 2021/03/26 21:55 | Johnson/Querrey v Mektic/Pavic | 6-7,4-6 |
| ATP Dubai MD | 2021/03/20 12:30 | Cabal/Farah v Mektic/Pavic | 7-6,7-6 |
| ATP Dubai MD | 2021/03/19 18:30 | Dodig/Polasek v Mektic/Pavic | 6-7,3-6 |
| ATP Dubai MD | 2021/03/18 14:00 | Chardy/Martin v Mektic/Pavic | 7-6,6-7,6-10 |
| ATP Dubai MD | 2021/03/15 12:00 | Goffin/Vliegen v Mektic/Pavic | 6-7,2-6 |
| ATP Doha MD | 2021/03/10 16:25 | Chardy/Martin v Mektic/Pavic | 6-4,6-4 |
| ATP Doha MD | 2021/03/09 16:15 | Arevalo/Middelkoop v Mektic/Pavic | 1-6,3-6 |