Stadium: Court 1 Round: 26 Ground: Clay
| ITF M15 Bad Waltersdorf | 2021/08/24 12:40 | Neil Oberleitner v Maximilian Homberg | 6-2,6-2 |
| ITF M15 Warmbad-Villach | 2021/08/19 10:15 | Jakob Aichhorn v Neil Oberleitner | 6-1,4-6,6-4 |
| ITF M15 Warmbad-Villach | 2021/08/18 10:05 | Neil Oberleitner v Savriyan Danilov | 7-5,7-6 |
| ITF M25 Frankfurt am Main | 2021/08/09 09:00 | Lenny Hampel v Neil Oberleitner | 6-4,6-4 |
| ITF M25 Kottingbrunn | 2021/07/21 12:10 | Neil Oberleitner v Toby Martin | 6-7,5-7 |
| ITF M25 Telfs | 2021/07/13 07:30 | Neil Oberleitner v Ondrej Horak | 4-6,4-6 |
| ITF M25 Telfs | 2021/07/12 07:50 | Neil Oberleitner v Jan Jermar | 6-3,6-0 |
| ITF M15 Sibenik | 2021/04/19 08:00 | Christian Sigsgaard v Neil Oberleitner | 7-6,6-4 |
| ITF M15 Bad Waltersdorf | 2021/08/25 07:00 | Marco Miceli v Eric Vanshelboim | 3-6,2-6 |
| ITF M25 Guayaquil | 2021/08/04 14:30 | Eric Vanshelboim v Ricardo Rodriguez-Pace | 6-2,3-6,4-6 |
| ITF M25 Portoviejo | 2021/07/29 16:40 | Jose Pereira v Eric Vanshelboim | 4-6,6-2,7-5 |
| ITF M25 Portoviejo | 2021/07/28 14:30 | Bruno P Navarro v Eric Vanshelboim | 2-6,3-6 |
| ITF M15 Poprad | 2021/07/06 11:00 | Oleksandr Ovcharenko v Eric Vanshelboim | 2-6,2-6 |
| ITF M25 Wroclaw | 2021/06/30 13:10 | Eric Vanshelboim v Bogdan Bobrov | 3-6,5-7 |
| ITF M15 Antalya | 2021/06/17 10:30 | Eric Vanshelboim v Gonzalo Lama | 2-6,2-6 |
| ITF M15 Antalya | 2021/06/16 15:50 | Eric Vanshelboim v Tadeas Paroulek | 6-2,6-2 |