Stadium: Hard Court 3 Round: 62 Ground: Hardcourt outdoor
| 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 |
| Austrian Pro Series | 2020/06/09 15:50 | Jonas Trinker v Alexander Erler | 3-6,4-6 |
| ITF M15 Trnava | 2020/02/27 10:00 | Jonas Trinker v Petr Michnev | 6-4,3-6,2-6 |
| ITF M15 Trnava | 2020/02/25 11:30 | Petr Nouza v Jonas Trinker | 2-6,6-7 |
| ITF M15 Heraklion | 2020/02/18 13:05 | Jonas Trinker v Christos Keisidis | 2-6,7-6,4-6 |
| ITF M15 Heraklion | 2021/06/08 06:30 | Ioannis Papounidis v Ben Jones | 0-6,4-6 |
| ITF M15 Heraklion | 2021/06/06 07:30 | Petr Hajek v Ioannis Papounidis | 4-6,7-5,6-10 |
| ITF M15 Heraklion | 2021/05/31 06:30 | Ioannis Papounidis v Volodymyr Uzhylovskyi | 3-6,5-7 |
| ITF M15 Heraklion | 2021/05/30 06:30 | Josef Southcombe v Ioannis Papounidis | 6-7,6-4,6-10 |
| ITF M15 Heraklion | 2021/05/23 06:30 | Ioannis Papounidis v Harry Wendelken | 6-4,3-6,3-10 |
| ITF Greece F7 | 2018/11/03 10:00 | Mathieu Garcia v Ioannis Papounidis | 6-1,6-2 |
| ITF Greece F6 | 2018/10/29 07:30 | Ioannis Papounidis v Domen Gostincar | 3-6,3-6 |
| ITF Greece F6 | 2018/10/28 07:30 | Shinnosuke Hiramatsu v Ioannis Papounidis | 7-5,1-6,0-6 |