Stadium: Court 3 Round: 26 Ground: Hardcourt outdoor
| Challenger Lugano MD | 2021/03/25 14:20 | Walkow/Zielinski v Raja/Weissborn | 6-4,6-2 |
| Challenger Split MD | 2021/04/10 14:35 | Golubev/Nedovyesov v Walkow/Zielinski | 7-5,6-7,10-5 |
| Challenger Split MD | 2021/04/09 13:35 | Walkow/Zielinski v Olivetti/Reid | 6-4,6-4 |
| Challenger Split MD | 2021/04/08 11:00 | Walkow/Zielinski v Galloway/Lawson | 7-5,7-6 |
| Challenger Split MD | 2021/04/07 12:40 | Doumbia/Reboul v Walkow/Zielinski | 3-6,2-6 |
| Challenger Lugano MD | 2021/03/26 16:05 | Molchanov/Stakhovsky v Walkow/Zielinski | 4-6,7-6,10-4 |
| Challenger Lugano MD | 2021/03/25 14:20 | Walkow/Zielinski v Raja/Weissborn | 6-4,6-2 |
| Challenger Lugano MD | 2021/03/24 13:35 | Walkow/Zielinski v Margaroli/Sock | 7-6,6-7,10-3 |
| Challenger Biella MD | 2021/03/12 14:45 | Molchanov/Stakhovsky v Walkow/Zielinski | 7-6,7-6 |
| Challenger Split MD | 2021/04/08 12:45 | Raja/Weissborn v Kolar/Rosol | 3-6,6-3,8-10 |
| Challenger Split MD | 2021/04/07 11:25 | Raja/Weissborn v Kekez/Poljicak | 6-2,6-3 |
| Challenger Lugano MD | 2021/03/25 14:20 | Walkow/Zielinski v Raja/Weissborn | 6-4,6-2 |
| Challenger Lugano MD | 2021/03/23 17:15 | Golubev/Tiurnev v Raja/Weissborn | 4-6,6-3,7-10 |
| Challenger Biella MD | 2021/03/19 17:35 | Glasspool/Reid v Raja/Weissborn | 4-6,6-4,10-7 |
| Challenger Biella MD | 2021/03/18 13:20 | Raja/Weissborn v Halys/Pouille | 6-4,4-6,10-7 |
| Challenger Biella MD | 2021/03/17 15:25 | Santillan/Tomic v Raja/Weissborn | 2-6,7-5,3-10 |
| ATP Marseille MD | 2021/03/10 14:00 | Raja/Weissborn v Lammons/Withrow | 4-6,6-7 |