Stadium: Court 2 Round: 26 Ground: Clay
| ITF - M25 Frankfurt nad Mohanom | 2021/08/11 09:00 | Roberto Ortega-Olmedo v Matthew Romios | 2-6,4-6 |
| ITF - M25 Frankfurt nad Mohanom | 2021/08/10 08:30 | Matthew Romios v Yan Sabanin | 5-7,4-6 |
| ITF - M25 Frankfurt nad Mohanom | 2021/08/09 11:30 | Matthew Romios v Giles Hussey | 7-6,7-6 |
| ITF - M25 Wetzlar | 2021/08/05 09:00 | Louis Wessels v Matthew Romios | 6-3,6-1 |
| ITF - M25 Wetzlar | 2021/08/04 12:55 | Matthew Romios v Max Wiskandt | 6-4,6-3 |
| ITF - M25 Wetzlar | 2021/08/03 09:00 | Matthew Romios v Daniel Paty | 6-4,7-5 |
| ITF - M25 Wetzlar | 2021/08/02 12:45 | Matthew Romios v David Tesic | 6-1,6-2 |
| ITF - M15 Esch/Alzette | 2021/07/20 13:00 | Matthew Romios v Andreja Petrovic | 7-6,4-6,3-6 |
| ITF - M25 Frankfurt nad Mohanom | 2021/08/11 15:30 | Kai Wehnelt v Lucas Gerch | 6-3,2-6,4-6 |
| ITF - M25 Wetzlar | 2021/08/04 09:55 | Daniel Cukierman v Lucas Gerch | 6-3,2-6,6-4 |
| Challenger - Poznan | 2021/07/26 11:35 | David Poljak v Lucas Gerch | 7-5,1-6,6-4 |
| Challenger - Poznan | 2021/07/25 10:30 | Sebastian Fanselow v Lucas Gerch | 2-6,5-7 |
| ITF - M25 Haag | 2021/07/01 09:55 | Manuel Guinard v Lucas Gerch | 6-3,6-2 |
| ITF - M25 Haag | 2021/06/29 11:20 | Lucas Gerch v Vladimir Ivanov | 6-1,6-2 |
| Challenger - Forli | 2021/06/16 09:30 | Francesco Forti v Lucas Gerch | 6-4,6-4 |
| Challenger - Forli | 2021/06/15 09:30 | Lucas Gerch v Thiago Agustin Tirante | 7-6,3-6,6-3 |