Stadium: Manolo Santana Stadium Round: 29 Ground: Clay
| ATP Monte Carlo MD | 2021/04/17 09:30 | Granollers/Zeballos v Mektic/Pavic | 6-3,5-7,4-10 |
| ATP Madrid MD | 2021/05/07 14:00 | Granollers/Zeballos v Herbert/Mahut | 7-6,6-2 |
| ATP Madrid MD | 2021/05/05 10:55 | Granollers/Zeballos v Khachanov/Rublev | 6-3,6-2 |
| ATP Barcelona MD | 2021/04/20 13:40 | Krawietz/Tecau v Granollers/Zeballos | 7-6,7-6 |
| ATP Monte Carlo MD | 2021/04/17 09:30 | Granollers/Zeballos v Mektic/Pavic | 6-3,5-7,4-10 |
| ATP Monte Carlo MD | 2021/04/16 09:00 | Garin/Pella v Granollers/Zeballos | 3-6,1-6 |
| ATP Monte Carlo MD | 2021/04/14 15:30 | Khachanov/Rublev v Granollers/Zeballos | 3-6,1-6 |
| ATP Miami MD | 2021/03/25 16:30 | Puetz/Zverev v Granollers/Zeballos | 6-2,6-4 |
| ATP Acapulco MD | 2021/03/21 01:00 | Granollers/Zeballos v Skupski/Skupski | 6-7,4-6 |
| ATP Madrid MD | 2021/05/08 12:00 | Gille/Vliegen v Mektic/Pavic | 4-6,2-6 |
| ATP Madrid MD | 2021/05/07 11:00 | Koolhof/Kubot v Mektic/Pavic | 3-6,7-6,7-10 |
| ATP Madrid MD | 2021/05/06 09:00 | Purcell/Saville v Mektic/Pavic | 6-4,3-6,4-10 |
| ATP Monte Carlo MD | 2021/04/18 10:00 | Evans/Skupski v Mektic/Pavic | 3-6,6-4,7-10 |
| ATP Monte Carlo MD | 2021/04/17 09:30 | Granollers/Zeballos v Mektic/Pavic | 6-3,5-7,4-10 |
| ATP Monte Carlo MD | 2021/04/16 10:15 | Herbert/Mahut v Mektic/Pavic | 3-6,1-6 |
| ATP Monte Carlo MD | 2021/04/15 11:20 | Behar/Escobar v Mektic/Pavic | 4-6,6-1,3-10 |
| ATP Miami MD | 2021/04/03 19:30 | Evans/Skupski v Mektic/Pavic | 4-6,4-6 |