Stadium: Court 3 Round: 25 Ground: Clay
| Challenger - Meerbusch | 2023/08/08 12:20 | Michael Geerts v Marvin Moeller | 7-5,6-7,6-4 |
| Challenger - Lüdenscheid | 2023/08/04 08:00 | Marvin Moeller v Benoit Paire | 4-6,4-6 |
| Challenger - Lüdenscheid | 2023/08/01 15:35 | Marvin Moeller v Nick Hardt | 6-3,6-1 |
| Challenger - Lüdenscheid | 2023/07/31 13:30 | Sandro Kopp v Marvin Moeller | 0-6,1-6 |
| Challenger - Lüdenscheid | 2023/07/30 10:35 | Karlo Cubelic v Marvin Moeller | 3-6,6-3,2-6 |
| ATP - Hamburg | 2023/07/22 13:20 | Marvin Moeller v Jan Choinski | 3-6,4-6 |
| ITF M25 - Uriage | 2023/07/16 08:30 | Marvin Moeller v Ugo Blanchet | 3-6,4-6 |
| ITF M25 - Uriage | 2023/07/14 09:20 | Marvin Moeller v Luca Wiedenmann | 7-6,7-6 |
| ITF - M15 Hyvinkaa | 2023/08/04 09:00 | Adam Heinonen v Leonardo Rossi | 4-6,3-6 |
| ITF - M15 Hyvinkaa | 2023/08/02 15:00 | Adam Heinonen v Niccolo Catini | 6-1,6-2 |
| ITF - M15 Hyvinkaa | 2023/08/01 07:00 | Adam Heinonen v Robin Erik Parts | 6-2,4-6,10-5 |
| ITF - M15 Hyvinkaa | 2023/07/31 09:30 | Adam Heinonen v Henrik Bladelius | 6-2,6-7,10-2 |
| ITF M15 - Vejle | 2023/07/24 12:00 | Adam Heinonen v Facundo Bermejo | 4-6,6-4,8-10 |
| ITF M15 Sofia | 2023/07/06 08:10 | Adam Heinonen v Denis Klok | 1-6,1-6 |
| ITF M15 Sofia | 2023/07/05 06:00 | Sean Hess v Adam Heinonen | 7-5,5-7,5-7 |
| ITF M15 Sofia | 2023/07/03 14:30 | Aristotelis Thanos v Adam Heinonen | 3-6,5-7 |