Stadium: Court 2 Round: 26 Ground: Hardcourt outdoor
| ATP Miami MD | 2021/03/25 15:00 | Fritz/Isner v Bublik/Mannarino | 7-5,6-3 |
| 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 |
| ATP Rotterdam MD | 2021/03/07 11:45 | Krawietz/Tecau v Mektic/Pavic | 6-7,2-6 |