Stadium: Court 8 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Monastir | 2021/12/28 12:50 | Vladislav Ivanov v Niklas Waldner | 6-1,6-4 |
| ITF M15 Monastir | 2021/12/19 09:00 | Daniel Bagnolini v Niklas Waldner | 6-7,6-4,10-8 |
| ITF M15 Monastir | 2021/12/13 08:00 | Pietro Pampanin v Niklas Waldner | 6-3,6-3 |
| ITF M15 Ulcinj | 2021/09/19 08:00 | Petar Jovanovic v Niklas Waldner | 6-3,6-4 |
| ITF M15 Bad Waltersdorf | 2021/08/31 08:20 | Alen Rogic-Hadzalic v Niklas Waldner | 1-6,6-1,10-3 |
| ITF M15 Bad Waltersdorf | 2021/08/30 09:00 | Niklas Waldner v Lukas Rohseano | 7-6,7-5 |
| ITF M15 Warmbad-Villach | 2021/08/15 15:30 | Niklas Waldner v Rafael Kis Balazs | 4-6,5-7 |
| ITF M25 Bolzano | 2021/08/02 11:50 | Filippo Moroni v Niklas Waldner | 6-2,6-2 |
| ITF M15 Monastir | 2021/12/05 10:30 | Rayen Zribi v Josef Southcombe | 3-6,1-6 |
| ITF M15 Monastir | 2021/10/31 11:30 | Alexis Boureau v Rayen Zribi | 6-1,6-0 |
| ITF M15 Monastir | 2021/10/24 08:00 | Rayen Zribi v Bastian A U Santander | 4-6,2-6 |
| ITF M15 Monastir | 2021/10/17 09:00 | Rayen Zribi v Egor Tsarapkin | 4-6,0-6 |
| ITF M15 Monastir | 2021/10/11 09:00 | Matas Vasiliauskas v Rayen Zribi | 6-1,6-1 |
| ITF M15 Monastir | 2021/09/26 09:00 | Mohamed Amin Oueslati v Rayen Zribi | 6-2,6-1 |
| ITF M15 Monastir | 2021/09/05 09:30 | Linghao Zhang v Rayen Zribi | 6-2,6-1 |
| ITF M15 Monastir | 2021/08/29 10:30 | Rayen Zribi v Arjun Mehrotra | 1-6,2-6 |