Round: 62 Ground: Hardcourt outdoor
| ITF - M25 - Meerbusch | 2021/04/12 07:30 | Hazem Naw v Marlon Vankan | 6-0,4-6,10-4 |
| ITF - M15 - Antalya | 2021/03/28 06:30 | Deney Wassermann v Marlon Vankan | 6-1,6-4 |
| ITF - M15 - Antalya | 2021/03/24 06:30 | Paul Woerner v Marlon Vankan | 6-4,6-2 |
| ITF - M15 - Antalya | 2021/03/22 07:00 | Pablo Alemany v Marlon Vankan | 5-7,7-5,7-10 |
| ITF - M15 - Antalya | 2021/03/17 13:55 | Dragos Dima v Marlon Vankan | 6-1,6-1 |
| ITF - M15 - Antalya | 2021/03/16 06:30 | Vladimir Korolev v Marlon Vankan | 6-4,6-3 |
| ITF - M15 - Antalya | 2021/03/15 08:00 | Adrian Mateo Bejenaru v Marlon Vankan | 6-1,4-6,8-10 |
| ITF - M15 - Antalya | 2021/03/14 07:00 | Tommaso Roggero v Marlon Vankan | 4-6,6-0,5-10 |
| ITF - M15 - Monastir | 2021/04/18 13:00 | Lilian Breut v Niklas Schell | 6-2,6-3 |
| ITF - M15 - Monastir | 2021/04/14 08:30 | Niklas Schell v Giorgio Ricca | 3-6,2-6 |
| ITF - M15 - Monastir | 2021/04/12 13:00 | Leyton Rivera v Niklas Schell | 4-6,7-6,8-10 |
| ITF - M15 - Monastir | 2021/04/11 11:00 | Viktor Jovic v Niklas Schell | 6-7,2-6 |
| ITF - M25 - Trimbach | 2021/03/10 11:45 | Elmar Ejupovic v Niklas Schell | 7-6,6-4 |
| ITF - M25 - Trimbach | 2021/03/09 12:00 | Niklas Schell v Johann Lars | 6-3,6-4 |
| ITF - M25 - Trimbach | 2021/03/08 12:50 | Niklas Schell v Kilian Feldbausch | 6-3,6-4 |
| German Championship | 2020/12/10 15:30 | Daniel Masur v Niklas Schell | 6-1,6-3 |