Stadion: BNP Paribas Court Round: 62 Ground: Clay
| ITF - M25 - Eupen | 2021/09/05 07:30 | Massimo Brambati v Nico Hornitschek | 2-6,0-6 |
| ITF - M25 - Ricany | 2021/08/29 08:00 | Philipp Pavlenko v Nico Hornitschek | 7-5,6-3 |
| ITF - M25 - Caslano | 2021/08/23 13:55 | Louroi Martinez v Nico Hornitschek | 6-2,6-2 |
| ITF - M25 - Prostejov | 2021/08/17 11:50 | Uladzimir Ignatik v Nico Hornitschek | 2-6,6-0,6-1 |
| ITF - M25 - Prostejov | 2021/08/16 09:50 | Nico Hornitschek v Ondrej Valek | 6-1,6-2 |
| ITF - M25 - Prostejov | 2021/08/15 08:00 | Reese Stalder v Nico Hornitschek | 4-6,2-6 |
| ITF - M15 - Heraklion | 2021/05/30 09:00 | Nico Hornitschek v Sean Hodkin | 1-6,2-6 |
| ITF - M15 - Heraklion | 2021/05/23 10:00 | Nico Hornitschek v Ammar Elamin | 7-6,3-6,6-10 |
| ITF - M25 - Eupen | 2021/09/05 07:30 | Tom Gentzsch v Olivier Rojas | 6-3,7-5 |
| ITF - M25 - Trier | 2021/08/25 09:00 | Tom Gentzsch v Ryan Nijboer | 3-6,4-6 |
| ITF - M25 - Trier | 2021/08/23 13:30 | Paul Valsecchi v Tom Gentzsch | 5-7,3-6 |
| ITF - M25 - Prostejov | 2021/08/16 07:55 | Simon Malis v Tom Gentzsch | 6-4,5-7,10-8 |
| ITF - M25 - Prostejov | 2021/08/15 08:00 | Tomas Krcma v Tom Gentzsch | 0-6,2-6 |
| Challenger - Meerbusch | 2021/08/08 08:00 | Jesper De Jong v Tom Gentzsch | 6-1,6-3 |
| ITF - M15 - Skopje | 2021/06/01 08:00 | Niels Visker v Tom Gentzsch | 6-4,6-1 |
| ITF - M15 - Skopje | 2021/05/31 08:00 | Tom Gentzsch v Louis Allen | 7-6,2-6,13-11 |