Stadium: Court 4 Round: 62 Ground: Clay
| ITF M15 Cairo | 2021/01/20 07:30 | Petrovic, Luka v El Midhawy, Adam | 0-6,6-7 |
| ITF M15 Cairo | 2021/01/11 08:00 | Roncalli, Simone v Petrovic, Luka | 6-2,6-0 |
| ITF M15 Cairo | 2021/01/10 08:00 | Stone, Zakai v Petrovic, Luka | 4-6,2-6 |
| Adriatic Tennis Series | 2020/06/09 09:20 | Damir Dzumhur v Petrovic, Luka | 6-1,6-0 |
| ITF Great Britain F4 | 2018/09/09 09:00 | Petrovic, Luka v Maggs, Alexander | 3-6,6-7 |
| ITF M15 Cairo | 2021/01/19 08:00 | Andrey Chepelev v Krainer, L. | 6-3,2-6,10-6 |
| ITF M15 Cairo | 2021/01/18 08:00 | Krainer, L. v Sergi Perez Contri | 6-1,6-4 |
| ITF M15 Cairo | 2021/01/17 07:00 | Sunish, Dhruv v Krainer, L. | 3-6,3-6 |
| ITF M25 Prague | 2020/09/13 08:00 | Krainer, L. v Paroulek, Tadeas | 4-6,6-1,8-10 |
| ITF M15 Anif | 2020/08/23 12:00 | Alexander Shevchenko v Krainer, L. | 6-2,6-7,11-9 |
| ITF M15 Anif | 2020/08/23 07:00 | Krainer, L. v Tim Handel | 6-3,6-4 |
| Vogau, Singles Qualifying M-ITF-AUT-04A | 2020/08/19 11:40 | Krainer, L. v Nino Serdarusic | 3-6,3-6 |
| Austrian OTV Series | 2020/07/30 09:30 | David Pichler v Krainer, L. | 6-3,2-6,4-6 |