Stadium: Court 1 Round: 14 Ground: Hardcourt indoor
| ITF M25 Sierre | 2021/09/02 09:30 | Patrick Kypson v Jakub Paul | 4-6,6-1,6-1 |
| ITF M25 Sierre | 2021/09/01 11:10 | Jakub Paul v Pietro Rondoni | 7-6,6-3 |
| ITF M25 Caslano | 2021/08/26 08:30 | Alejandro Gonzalez v Jakub Paul | 6-2,7-5 |
| ITF M25 Caslano | 2021/08/25 08:30 | Jakub Paul v Valentin Vacherot | 6-3,7-6 |
| ITF M25 Muttenz | 2021/08/22 08:30 | Otto Virtanen v Jakub Paul | 1-6,5-7 |
| ITF M25 Muttenz | 2021/08/20 15:30 | Alejandro Gonzalez v Jakub Paul | 4-6,1-6 |
| ITF M25 Muttenz | 2021/08/19 09:30 | Jakub Paul v Calvin Hemery | 6-4,6-1 |
| ITF M25 Muttenz | 2021/08/18 09:45 | Jakub Paul v Maxime Mora | 6-1,7-5 |
| Challenger Istanbul | 2021/09/16 08:00 | Yasutaka Uchiyama v Christopher Heyman | 3-6,6-3,6-4 |
| Challenger Istanbul | 2021/09/14 08:40 | Christopher Heyman v Andrea Arnaboldi | 3-6,6-2,6-4 |
| Challenger Istanbul | 2021/09/13 07:30 | Geoffrey Blancaneaux v Christopher Heyman | 4-6,4-6 |
| Challenger Istanbul | 2021/09/12 08:00 | Artem Dubrivnyy v Christopher Heyman | 3-6,2-6 |
| Challenger Warsaw | 2021/08/23 09:00 | Christopher Heyman v Daniel Michalski | 5-7,3-6 |
| Challenger Warsaw | 2021/08/22 09:00 | Christopher Heyman v Patrik Niklas-Salminen | 6-1,6-3 |
| ITF M25 Koksijde | 2021/08/20 10:35 | Mathieu Perchicot v Christopher Heyman | 6-4,6-4 |
| ITF M25 Koksijde | 2021/08/19 08:00 | Christopher Heyman v Aidan Mchugh | 7-6,6-4 |