| 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 |
| UTR Pro Tennis Series Mulheim | 2021/10/15 07:00 | Tom Gentzsch v Christian Hansen | 4-6,1-6 |
| Tennis Point Exhibition Series | 2020/07/31 11:00 | Hazem Naw v Luca Gelhardt | 4-6,7-5,6-1 |
| Tennis Point Exhibition Series | 2020/07/30 10:30 | Luca Gelhardt v Benjamin Hassan | 5-7,4-6 |
| Tennis Point Exhibition Series | 2020/07/29 11:10 | Luca Gelhardt v Johannes Haerteis | 4-6,3-6 |
| Tennis Point Exhibition Series | 2020/07/28 08:00 | Constantin Schmitz v Luca Gelhardt | 6-3,6-1 |
| Tennis Point Exhibition Series | 2020/07/25 09:30 | Constantin Schmitz v Luca Gelhardt | 6-3,6-2 |
| Tennis Point Exhibition Series | 2020/07/24 09:30 | Christian Djonov v Luca Gelhardt | 0-6,6-7 |
| Tennis Point Exhibition Series | 2020/07/23 10:15 | Benjamin Hassan v Luca Gelhardt | 6-2,6-4 |
| Tennis Point Exhibition Series | 2020/07/22 08:00 | Hazem Naw v Luca Gelhardt | 6-0,2-6,2-6 |