Stadium: Court 2 Round: 27 Ground: Clay
| Challenger Szczecin - MD | 2021/09/15 16:05 | Margaroli/Vega Hernandez v Walkow/Zielinski | 3-6,4-6 |
| Challenger Meerbusch - MD | 2021/08/14 15:00 | Brown/Haase v Walkow/Zielinski | 3-6,1-6 |
| Challenger Meerbusch - MD | 2021/08/13 09:00 | De Jong/Stevens v Walkow/Zielinski | 2-6,7-6,9-11 |
| Challenger Meerbusch - MD | 2021/08/12 10:00 | Walkow/Zielinski v Sabanov/Sabanov | 7-6,6-4 |
| Challenger Meerbusch - MD | 2021/08/11 13:00 | Ficovich/Kicker v Walkow/Zielinski | 3-6,2-6 |
| Challenger Poznań - MD | 2021/07/29 16:25 | Gonzales/Johnson v Walkow/Zielinski | 2-6,7-6,13-11 |
| Challenger Poznań - MD | 2021/07/28 14:10 | Domingues/Elias v Walkow/Zielinski | 2-6,2-6 |
| ATP Gstaad - MD | 2021/07/25 11:20 | Huesler/Stricker v Walkow/Zielinski | 6-1,7-6 |
| Challenger Szczecin - MD | 2021/09/15 14:50 | Brown/Naw v Goransson/Lammons | 1-6,5-7 |
| Challenger Tulln - MD | 2021/09/10 10:00 | Goransson/Lammons v Brown/Vavassori | 3-6,2-6 |
| Challenger Tulln - MD | 2021/09/09 12:00 | Goransson/Lammons v Huesler/Zielinski | 6-4,6-4 |
| Challenger Tulln - MD | 2021/09/08 12:15 | Goransson/Lammons v Bobrov/Horansky | 6-4,7-6 |
| Challenger Biella - MD | 2021/05/08 10:00 | Goransson/Lammons v Matos/M R Alves | 7-6,6-3 |
| Challenger Biella - MD | 2021/05/07 13:05 | Goransson/Lammons v Doumbia/Reboul | 7-6,6-3 |
| Challenger Biella - MD | 2021/05/06 09:00 | Goransson/Lammons v Balaji/Nedunchezhiyan | 6-4,3-6,10-8 |
| Challenger Biella - MD | 2021/05/04 13:55 | Goransson/Lammons v Ito/Soeda | 6-1,6-0 |