Stadium: Court 6 Round: 54 Ground: Hardcourt indoor
| German Championship | 2021/12/10 12:00 | Leopold Zima v Henri Squire | 7-6,4-6,6-7 |
| German Championship | 2021/12/09 11:30 | Leopold Zima v Nikolas Walterscheid-Tukic | 6-2,4-6,5-3 |
| German Championship | 2021/12/07 17:00 | Leopold Zima v Jim Walder | 6-1,5-0 |
| ITF M15 Heraklion | 2021/11/18 08:40 | Leopold Zima v Mick Veldheer | 3-6,4-6 |
| ITF M15 Heraklion | 2021/11/17 14:10 | Leopold Zima v Alexandros Skorilas | 6-4,6-3 |
| ITF M15 Heraklion | 2021/11/16 08:30 | Marc Othman Ktiri v Leopold Zima | 5-7,3-6 |
| ITF M15 Heraklion | 2021/11/14 11:00 | Christopher Patzanovsky v Leopold Zima | 3-6,3-6 |
| ITF M25 Saint Dizier | 2021/11/03 09:00 | Tak Khunn Wang v Leopold Zima | 7-6,6-0 |
| German Championship | 2021/12/08 09:00 | Tom Gentzsch v Luca Gelhardt | 4-6,1-6 |
| ITF M15 Heraklion | 2021/11/14 11:00 | Leon Hoeveler v Tom Gentzsch | 6-4,6-3 |
| ITF M25 Villers Les Nancy | 2021/11/07 09:00 | Matt Ponchet v Tom Gentzsch | 6-1,6-4 |
| ITF M15 Parnu | 2021/10/28 08:55 | Tom Gentzsch v Vladimir Ivanov | 7-5,2-6,4-6 |
| ITF M15 Parnu | 2021/10/27 13:55 | Tom Gentzsch v Robertas Vrzesinski | 6-1,6-2 |
| ITF M15 Parnu | 2021/10/26 08:00 | Tom Gentzsch v Oskar Antinheimo | 6-2,6-4 |
| ITF M25 Hamburg | 2021/10/19 09:25 | Daniel Little v Tom Gentzsch | 6-4,6-2 |
| UTR Pro Tennis Series Mulheim | 2021/10/16 08:00 | Benjamin Hassan v Tom Gentzsch | 6-4,6-7,0-0 |