| WTT Contender Tunis MD | 2021/10/27 09:30 | Polansky/Martinko v Katsman/Grebnev | L | 3-1 |
| European Championships MD | 2021/06/27 14:10 | Katsman/Grebnev v Dyjas/Nuytinck | W | 3-1 |
| European Championships MD | 2021/06/26 14:35 | Katsman/Grebnev v Ecseki/Szudi | W | 3-2 |
| European Championships MD | 2021/06/26 08:35 | Duda/Qiu v Katsman/Grebnev | W | 1-3 |
| European Championships MD | 2021/06/25 08:40 | Katsman/Grebnev v Falck/Karlsson | W | 3-2 |
| European Championships MD | 2021/06/24 09:40 | Jevtovic/Peto v Katsman/Grebnev | W | 1-3 |
| Russia Championship MD | 2021/04/17 16:15 | Liventsov/Paykov v Katsman/Grebnev | W | 1-3 |
| Russia Championship MD | 2021/04/17 10:20 | Skachkov/Artemenko v Katsman/Grebnev | W | 1-3 |