Stadium: Centrale Round: 26 Ground: Hardcourt indoor
| Challenger Biella MD | 2021/03/12 14:45 | Molchanov/Stakhovsky v Walkow/Zielinski | 7-6,7-6 |
| Challenger Biella MD | 2021/03/11 12:00 | Masur/Rodionov v Walkow/Zielinski | 2-6,2-6 |
| Challenger Biella MD | 2021/02/13 12:30 | Walkow/Zielinski v Martinez Portero/Vega Hernandez | 4-6,6-3,8-10 |
| Challenger Biella MD | 2021/02/12 12:00 | Walkow/Zielinski v Galloway/Lawson | 6-4,6-7,10-6 |
| Challenger Biella MD | 2021/02/11 12:40 | Margaroli/Vasilevski v Walkow/Zielinski | 2-6,5-7 |
| Challenger Biella MD | 2021/02/10 10:00 | Augenti/Giunta v Walkow/Zielinski | 1-6,3-6 |
| Davis Cup | 2020/03/07 12:15 | Walkow/Zielinski v Lam/Yeung | 6-3,6-7,6-3 |
| ITF M25 Sunderland MD | 2020/02/29 13:35 | de Jong/Stevens v Walkow/Zielinski | 4-6,4-6 |