Stadium: Court 3 Round: 44 Ground: Clay
| ITF M15 Brcko | 2021/05/16 11:00 | Lazar Vojinovic v Stevan Popovic | 7-5,6-4 |
| ITF M15 Prijedor | 2021/05/10 10:30 | Lazar Vojinovic v Tomislav Jotovski | 5-7,0-6 |
| ITF M15 Prijedor | 2021/05/09 09:30 | Drazen Petrovic v Lazar Vojinovic | 3-6,6-0,4-10 |
| ITF M15 Antalya | 2021/04/07 09:35 | Lazar Vojinovic v Adam Pavlasek | 1-6,4-6 |
| ITF M15 Antalya | 2021/04/06 07:00 | Lazar Vojinovic v Michalis Sakellaridis | 1-6,7-6,10-8 |
| ITF M15 Antalya | 2021/04/05 07:00 | Nicolo Turchetti v Lazar Vojinovic | 1-6,1-6 |
| ITF M15 Antalya | 2021/04/04 06:30 | Lazar Vojinovic v Vladislav Sveridenko | 6-4,6-2 |
| ITF M15 Cairo | 2021/01/27 07:30 | Lazar Vojinovic v Daniele Capecchi | 3-6,2-6 |
| 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 |
| ITF M15 Cairo | 2021/04/18 08:30 | Luka Petrovic v Yuichiro Inui | 7-5,6-3 |
| ITF M15 Cairo | 2021/04/15 12:30 | Luka Petrovic v Luigi Sorrentino | 2-6,3-6 |