Estadio: Court 4 Round: 28 Ground: Hardcourt outdoor
| Challenger Split - Dobles Masculinos | 2021/04/08 11:00 | Walkow/Zielinski v Galloway/Lawson | 7-5,7-6 |
| Challenger Split - Dobles Masculinos | 2021/04/07 12:40 | Doumbia/Reboul v Walkow/Zielinski | 3-6,2-6 |
| Challenger de Lugano - Dobles Masculinos | 2021/03/26 16:05 | Molchanov/Stakhovsky v Walkow/Zielinski | 4-6,7-6,10-4 |
| Challenger de Lugano - Dobles Masculinos | 2021/03/25 14:20 | Walkow/Zielinski v Raja/Weissborn | 6-4,6-2 |
| Challenger de Lugano - Dobles Masculinos | 2021/03/24 13:35 | Walkow/Zielinski v Margaroli/Sock | 7-6,6-7,10-3 |
| Challenger de Biella - Dobles Masculinos | 2021/03/12 14:45 | Molchanov/Stakhovsky v Walkow/Zielinski | 7-6,7-6 |
| Challenger de Biella - Dobles Masculinos | 2021/03/11 12:00 | Masur/Rodionov v Walkow/Zielinski | 2-6,2-6 |
| Challenger de Biella - Dobles Masculinos | 2021/02/13 12:30 | Walkow/Zielinski v Martinez Portero/Vega Hernandez | 4-6,6-3,8-10 |
| Challenger Split - Dobles Masculinos | 2021/04/08 12:35 | Sabanov/Sabanov v Olivetti/Reid | 1-6,5-7 |
| Challenger Split - Dobles Masculinos | 2021/04/07 14:30 | Bolt/Polmans v Olivetti/Reid | 6-7,7-5,9-11 |