Stadium: Court 1 Round: 27 Ground: Clay
| Austrian Tennis Championship | 2020/07/27 08:00 | Neil Oberleitner v Lukas Krainer | 0-6,1-6 |
| ITF M15 Cairo | 2021/04/28 14:55 | Jack Pinnington Jones v Lukas Krainer | 7-6,2-6,6-3 |
| ITF M15 Cairo | 2021/04/20 08:00 | Lukas Krainer v Gian Marco Ortenzi | 4-6,6-7 |
| ITF M15 Cairo | 2021/04/19 08:00 | Lukas Krainer v Lorenzo Claverie | 6-2,6-7,11-9 |
| ITF M15 Cairo | 2021/04/18 07:00 | Lukas Krainer v Stephanos Schinas | 6-1,6-1 |
| ITF M15 Cairo | 2021/04/16 08:30 | Lukas Krainer v Giacomo Dambrosi | 6-4,4-6,3-6 |
| ITF M15 Cairo | 2021/04/15 13:20 | Lukas Krainer v Matteo Donati | 6-2,4-6,6-4 |
| ITF M15 Cairo | 2021/04/14 12:30 | Daniele Capecchi v Lukas Krainer | 6-2,6-7,4-6 |
| ITF M15 Cairo | 2021/04/13 12:30 | Lukas Krainer v Amr Asrawy | 6-3,6-4 |
| ITF M15 Sibenik | 2021/04/19 08:00 | Christian Sigsgaard v Neil Oberleitner | 7-6,6-4 |
| ITF M15 Sibenik | 2021/04/18 08:00 | Matic Dimic v Neil Oberleitner | 7-6,4-6,6-10 |
| ITF M15 Sharm El Sheikh | 2021/04/06 08:55 | Neil Oberleitner v Adam Jones | 2-6,6-1,8-10 |
| ITF M15 Sharm El Sheikh | 2021/04/05 11:30 | Neil Oberleitner v Emiliano Troche | 6-0,6-1 |
| ITF M15 Sharm El Sheikh | 2021/03/28 14:30 | Lorenzo Rottoli v Neil Oberleitner | 6-1,3-6,10-8 |
| ITF M15 Sharm El Sheikh | 2021/03/23 07:30 | Francesco Vilardo v Neil Oberleitner | 6-2,6-4 |
| ITF M15 Sharm El Sheikh | 2021/03/22 07:30 | Zura Tkemaladze v Neil Oberleitner | 4-6,6-2,5-10 |
| ITF M15 Sharm El Sheikh | 2021/03/21 07:00 | Yacoub Makzoume v Neil Oberleitner | 1-6,2-6 |