Stadium: Court 1 Round: 25 Ground: Hardcourt indoor
| ITF M25 Trier | 2021/08/25 09:00 | Marvin Moeller v Leopold Zima | 6-1,7-5 |
| ITF M25 Falun | 2021/09/27 10:20 | Leopold Zima v Jonathan Stenberg | 6-4,6-4 |
| ITF M25 Falun | 2021/09/26 08:00 | Leopold Zima v Nicolas Kobelt | 6-4,6-2 |
| ITF M25 Trier | 2021/08/25 09:00 | Marvin Moeller v Leopold Zima | 6-1,7-5 |
| ITF M25 Trier | 2021/08/23 15:05 | Leopold Zima v Benito Sanchez Martinez | 6-1,7-5 |
| ITF M25 Trier | 2021/08/23 10:30 | Leopold Zima v Lennart Melzer | 6-1,6-1 |
| ITF M25 Ueberlingen | 2021/08/19 12:30 | Ergi Kirkin v Leopold Zima | 5-7,6-0,6-3 |
| ITF M25 Ueberlingen | 2021/08/18 12:55 | Leopold Zima v Martin Benes | 6-2,6-1 |
| ITF M25 Frankfurt am Main | 2021/08/09 08:50 | Dominik Fritsche v Leopold Zima | 6-3,7-5 |
| ITF M25 Jönköping | 2021/09/23 08:00 | Marvin Moeller v Viktor Durasovic | 7-5,3-6,4-6 |
| ITF M25 Jönköping | 2021/09/22 09:45 | Marvin Moeller v Tibo Colson | 6-2,3-6,6-3 |
| ITF M25 Jönköping | 2021/09/21 09:20 | Marvin Moeller v Harry Wendelken | 4-6,7-5,6-1 |
| ITF M25 Plaisir | 2021/09/16 07:55 | Vasil Kirkov v Marvin Moeller | 2-6,7-6,7-6 |
| ITF M25 Plaisir | 2021/09/14 10:50 | Lisandru Rodriguez v Marvin Moeller | 1-6,0-6 |
| ITF M25 Trier | 2021/08/28 15:00 | Tim Handel v Marvin Moeller | 7-5,2-6,6-2 |
| ITF M25 Trier | 2021/08/27 12:00 | Marvin Moeller v Mick Veldheer | 6-3,6-3 |
| ITF M25 Trier | 2021/08/26 15:00 | Marvin Moeller v Marlon Vankan | 6-2,7-5 |