Stadium: Court 4 Round: 25 Ground: Clay
| ITF M15 Sarajevo | 2021/06/01 09:00 | Petar Jovanovic v Luka Petrovic | 3-6,7-5,9-11 |
| 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 M25 Kiseljak | 2021/05/25 15:25 | Aleksandar Mihailovic v Francesco Forti | 1-6,1-6 |
| ITF M15 Brcko | 2021/05/16 07:00 | Valentin Lapalu v Aleksandar Mihailovic | 6-3,6-4 |