Stadium: Hard 20 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Heraklion | 2021/11/09 07:00 | Marius Ruzgas v Jannik Maute | 3-6,6-4,12-14 |
| ITF M15 Heraklion | 2021/11/08 09:00 | Jannik Maute v Tim Heger | 4-6,6-3,15-13 |
| ITF M15 Heraklion | 2021/11/07 09:00 | Jannik Maute v Thomas George Brun | 6-0,6-0 |
| ITF M15 Heraklion | 2021/11/05 07:00 | Markus Eriksson v Jonas Trinker | 6-0,6-1 |
| ITF M15 Heraklion | 2021/11/04 07:00 | Peter Goldsteiner v Jonas Trinker | 3-6,3-6 |
| ITF M15 Heraklion | 2021/11/03 09:20 | Stephanos Schinas v Jonas Trinker | 3-6,2-6 |
| ITF M15 Selva Gardena | 2021/10/25 16:30 | Jonas Trinker v Federico Iannaccone | 1-6,3-6 |
| ITF M15 Warmbad-Villach | 2021/08/18 12:45 | Gabriel Decamps v Jonas Trinker | 6-1,7-6 |
| ITF M25 Klosters | 2021/06/21 07:00 | Jonas Trinker v Tomas Papik | 5-7,6-3,4-10 |
| Austrian Pro Series | 2020/06/12 14:00 | Lenny Hampel v Jonas Trinker | 6-3,6-4 |
| Austrian Pro Series | 2020/06/11 09:25 | Jonas Trinker v Dennis Novak | 1-6,1-6 |