Stadium: Court 1 Round: 26 Ground: Carpet indoor
| Challenger Alicante - Herrdubbel | 2021/10/15 10:00 | Nedunchezhiyan/Raja v Molchanov/Vega Hernandez | 4-6,4-6 |
| Challenger Alicante - Herrdubbel | 2021/10/14 10:40 | Nedunchezhiyan/Raja v Marrero/Mulye | 6-2,6-3 |
| Challenger Alicante - Herrdubbel | 2021/10/13 11:10 | Goransson/Walkow v Nedunchezhiyan/Raja | 4-6,2-6 |
| Challenger Barcelona - Herrdubbel | 2021/10/06 13:15 | Nedunchezhiyan/Raja v Horansky/Molcan | 7-6,2-6,8-10 |
| Challenger Lisbon - Herrdubbel | 2021/10/02 13:20 | Nedunchezhiyan/Raja v Borges/Cabral | 7-6,6-3 |
| Challenger Lisbon - Herrdubbel | 2021/10/01 11:00 | Nedunchezhiyan/Raja v Faria/Faria | 4-6,6-3,10-5 |
| Challenger Lisbon - Herrdubbel | 2021/09/30 09:30 | Nedunchezhiyan/Raja v Forti/Zeppieri | 6-3,6-4 |
| Challenger Lisbon - Herrdubbel | 2021/09/29 12:00 | Nedunchezhiyan/Raja v Cacao/Falcao | 6-3,6-2 |
| Challenger - Mouilleron le Captif - Herrdubbel | 2021/10/06 14:30 | Droguet/Mayot v Walkow/Zielinski | 6-4,6-4 |
| Challenger Orleans MD | 2021/10/01 10:00 | Lammons/Pel v Walkow/Zielinski | 7-5,7-6 |
| Challenger Orleans MD | 2021/09/29 15:20 | Walkow/Zielinski v Fils/M Perricard | 6-3,6-4 |
| Challenger Szczecin MD | 2021/09/16 14:00 | Walkow/Zielinski v Goransson/Lammons | 7-6,3-6,0-10 |
| 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 |