Stadium: Court 08 Round: 62 Ground: Clay
| ITF M25 Telfs | 2021/07/12 13:30 | Taiyo Yamanaka v Erwin Troebinger | 6-4,6-1 |
| ITF M15 Monastir | 2021/02/21 11:00 | Erwin Troebinger v Luigi Castelletti | 6-7,2-6 |
| ITF M15 Monastir | 2021/02/14 09:00 | Erwin Troebinger v Liova Ajavon | 5-7,6-7 |
| Challenger Ortisei | 2020/11/14 14:00 | Erwin Troebinger v Andrea Pellegrino | 4-6,0-6 |
| ITF M25 Trento | 2020/02/24 10:35 | Marco Mosciatti v Erwin Troebinger | 7-6,6-4 |
| ITF M15 Monastir | 2020/01/19 08:00 | Erwin Troebinger v Vitali Shvets | 1-6,2-6 |
| Challenger Ortisei | 2019/11/11 18:15 | Erwin Troebinger v Giulio Zeppieri | 1-6,4-6 |
| ITF M25 Santa Margherita | 2019/09/23 12:00 | Gian Marco Ortenzi v Erwin Troebinger | 1-6,7-6,10-3 |
| ITF M25 Pitesti | 2021/08/02 10:00 | Martin Zeljenka v Vladislav Melnic | 3-6,6-7 |
| ITF M25 Pitesti | 2021/08/01 13:30 | Martin Zeljenka v Samuil Konov | 6-4,6-4 |
| ITF M15 Novi Sad | 2021/07/25 07:00 | Martin Zeljenka v Danilo Raicevic | 4-6,4-6 |
| ITF M25 Kottingbrunn | 2021/07/19 12:25 | Peter Goldsteiner v Martin Zeljenka | 6-4,7-6 |
| ITF M25 Kottingbrunn | 2021/07/18 07:30 | Martin Zeljenka v Rafael Kis Balazs | 2-6,6-4,10-2 |
| ITF M25 Belgrade | 2021/06/29 07:00 | Bogdan Pavel v Martin Zeljenka | 6-1,6-3 |
| ITF M25 Belgrade | 2021/06/28 10:00 | Martin Zeljenka v Matvey Minin | 7-5,6-3 |
| ITF M25 Belgrade | 2021/06/27 12:00 | Martin Zeljenka v George Gregoriou | 6-1,6-1 |