Stadium: Court 2 Round: 54 Ground: Clay
| 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 M15 Heraklion | 2021/05/16 06:30 | Yannick Stephan Born v Nico Hornitschek | 4-6,7-6,10-6 |
| ITF M25 Meerbusch | 2021/04/11 14:30 | Nico Hornitschek v Sebastian Prechtel | 2-6,2-6 |
| ITF M25 Trimbach | 2021/03/08 16:25 | Mischa Lanz v Nico Hornitschek | 6-4,6-3 |
| German Championship | 2020/12/08 09:30 | Nico Hornitschek v Nino Ehrenschneider | 6-4,3-6,2-6 |
| ITF Germany F12 | 2018/08/12 08:00 | Tim Handel v Nico Hornitschek | 6-2,7-5 |
| ITF M25 Prostejov | 2021/08/15 09:00 | Vojtech Vlkovsky v Ondrej Valek | 6-4,4-6,9-11 |
| ITF M25 Kottingbrunn | 2021/07/18 07:30 | Peter Goldsteiner v Ondrej Valek | 6-2,6-2 |
| ITF M15 Poprad | 2021/07/04 08:00 | Samuel Puskar v Ondrej Valek | 7-5,6-1 |
| ITF M25 Most | 2021/05/25 08:00 | Ondrej Valek v Sean Cuenin | 2-6,2-6 |
| ITF M25 Most | 2021/05/24 08:00 | Ondrej Valek v Alexander Wolfschmidt | 6-2,6-3 |
| ITF M25 Most | 2021/05/23 14:00 | George Loffhagen v Ondrej Valek | 4-6,1-6 |
| ITF M25 Jablonec Nad Nisou | 2021/05/16 11:30 | Ondrej Valek v Lucas Bouquet | 7-5,2-6,7-10 |
| ITF M25 Prague | 2021/05/09 08:30 | Ondrej Valek v Jean Thirouin | 6-3,6-7,4-10 |