Stadium: Court 1 Round: 62 Ground: Clay
| ITF M25 Most | 2021/05/23 14:00 | Jakub Katuch v Hasan Ibrahim | 1-6,4-6 |
| ITF M25 Jablonec Nad Nisou | 2021/05/16 08:30 | Robin Stanek v Jakub Katuch | 6-1,6-2 |
| ITF M25 Prague | 2021/05/09 07:30 | Jakub Katuch v Andrew Paulson | 3-6,6-3,6-10 |
| ITF M15 Bratislava | 2021/03/08 12:00 | Jakub Katuch v Luca Van Assche | 2-6,2-6 |
| ITF M15 Bratislava | 2021/03/01 12:00 | Piotr Grynkowski v Jakub Katuch | 6-3,6-1 |
| ITF M15 Bratislava | 2020/11/23 09:00 | Jakub Katuch v Noah Thurner | 6-7,7-5,9-11 |
| ITF M15 Piestany | 2019/05/06 08:00 | Johannes Bangratz v Jakub Katuch | 6-0,6-3 |
| Challenger Bratislava | 2018/11/03 12:30 | Riccardo Bellotti v Jakub Katuch | 6-1,6-2 |
| ITF M25 Most | 2021/05/24 09:00 | Niklas Waldner v Edward Hubner | 4-6,3-6 |
| ITF M25 Most | 2021/05/23 08:00 | Niklas Waldner v Milos Karol | 3-6,7-5,10-3 |
| ITF M15 Monastir | 2021/05/09 11:00 | Taisei Ichikawa v Niklas Waldner | 6-1,6-0 |
| ITF M15 Monastir | 2021/05/02 12:00 | Andrea Picchione v Niklas Waldner | 6-2,6-4 |
| ITF M15 Monastir | 2021/04/25 11:30 | Niklas Waldner v Iiro Vasa | 1-6,4-6 |
| ITF M15 Anif | 2020/08/23 07:00 | Davide Galoppini v Niklas Waldner | 6-3,6-4 |
| ITF M25 Vogau | 2020/08/17 11:30 | Niklas Waldner v Alexander Shevchenko | 4-6,2-6 |
| ITF M25 Vogau | 2020/08/17 07:30 | Dean Thurner v Niklas Waldner | 4-6,6-2,5-10 |