Stadium: Court 3 Round: 44 Ground: Clay
| ITF M15 Sarajevo | 2021/05/31 10:00 | Peter Goldsteiner v Petar Jovanovic | 6-7,4-6 |
| ITF M15 Sarajevo | 2021/05/31 12:00 | Max Van Wijk v Luka Petrovic | 3-6,2-6 |
| ITF M15 Brcko | 2021/05/17 15:30 | Lazar Vojinovic v Luka Petrovic | 6-3,6-4 |
| ITF M15 Brcko | 2021/05/16 09:30 | Mario Aleksic v Luka Petrovic | 1-6,1-3 |
| ITF M15 Cairo | 2021/05/03 12:30 | Leonardo Catani v Luka Petrovic | 7-6,1-6,10-3 |
| ITF M15 Cairo | 2021/05/02 13:30 | Luka Petrovic v Amr Asrawy | 7-6,6-4 |
| ITF M15 Cairo | 2021/04/26 08:00 | Luka Petrovic v Benedikt Emesz | 3-6,4-6 |
| ITF M15 Cairo | 2021/04/25 07:30 | Luka Petrovic v Egill Sigurdsson | 6-2,6-3 |
| ITF M15 Cairo | 2021/04/20 08:00 | Olexiy Kolisnyk v Luka Petrovic | 7-6,6-2 |