Stadium: TC Pau 1 Round: 26 Ground: Hardcourt indoor
| Challenger Verona MD | 2021/08/17 16:15 | Kotov/Tseng v Doumbia/Reboul | 7-5,1-6,8-10 |
| Challenger Oeiras MD | 2021/04/11 14:30 | Borges/Cabral v Kotov/Tseng | 6-1,6-2 |
| Challenger Oeiras MD | 2021/04/09 10:00 | Escobedo/Miedler v Kotov/Tseng | 6-4,2-6,6-10 |
| Challenger Oeiras MD | 2021/04/08 14:50 | Kotov/Tseng v Bourchier/Galdos | 6-4,6-4 |
| Challenger Oeiras MD | 2021/04/07 10:00 | Faria/Torres v Kotov/Tseng | 2-6,4-6 |