| UTR Pro Tennis Series Pazardzhik | 2021/04/06 07:00 | de La Bassetiere, Constant v Joncour, Ronan | 7-5,4-6,4-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/04/05 13:00 | de La Bassetiere, Constant v Gabriel Donev | 5-7,1-6 |
| ITF - M15 Monastir | 2021/03/08 15:45 | Savva Polukhin v de La Bassetiere, Constant | 6-4,6-2 |
| ITF - M15 Monastir | 2021/03/08 12:30 | Dermiens, Guillaume v de La Bassetiere, Constant | 3-6,2-6 |
| ITF - M15 Monastir | 2021/03/07 08:00 | de La Bassetiere, Constant v Melnic, Vladislav | 6-4,6-3 |
| ITF - M15 Monastir | 2021/03/03 08:30 | Dougaz, Aziz v de La Bassetiere, Constant | 6-3,3-6,6-2 |
| ITF - M15 Monastir | 2021/03/01 14:30 | Luca Castagnola v de La Bassetiere, Constant | 1-6,2-6 |
| ITF - M15 Monastir | 2021/03/01 09:00 | de La Bassetiere, Constant v Melnic, Vladislav | 7-6,6-0 |
| UTR Pro Tennis Series Pazardzhik | 2021/04/06 08:30 | Gabriel Donev v Yanaki Milev | 6-2,5-1 |