Stadium: Court 3 Round: 27 Ground: Hardcourt indoor
| Challenger Nottingham MD | 2021/06/08 17:55 | Broady/Peniston v Polmans/Sitak | 2-6,6-7 |
| Challenger Heilbronn MD | 2021/05/14 11:00 | Polmans/Sitak v Arends/Sharan | 2-6,6-3,8-10 |
| Challenger Heilbronn MD | 2021/05/12 14:30 | Polmans/Sitak v Begemann/Brown | 6-4,6-4 |
| Challenger Nottingham MD | 2021/06/09 17:10 | Kudla/Zhang v Lammons/Withrow | 7-6,6-7,6-10 |
| ATP Parma MD | 2021/05/26 13:50 | Reid/Venus v Lammons/Withrow | 7-6,6-3 |
| ATP Geneva MD | 2021/05/20 11:00 | Lammons/Withrow v Behar/Escobar | 3-6,4-6 |
| Challenger Heilbronn MD | 2021/05/15 09:00 | Goransson/Verbeek v Lammons/Withrow | 7-6,4-6,8-10 |
| Challenger Heilbronn MD | 2021/05/14 15:50 | Lammons/Withrow v Arends/Sharan | 6-3,6-3 |
| Challenger Heilbronn MD | 2021/05/13 16:30 | Kudla/McDonald v Lammons/Withrow | 6-7,2-6 |
| Challenger Rome MD | 2021/04/30 14:30 | Lammons/Withrow v Andreozzi/Duran | 3-6,4-6 |
| Challenger Rome MD | 2021/04/30 10:00 | Lammons/Withrow v Gaston/Lamasine | 4-6,6-1,10-6 |