Stadium: Court 2 Round: 62 Ground: Clay
| ITF M15 Novi Sad | 2021/07/25 12:00 | Marko Stakusic v Nikolas Lahky | 3-6,5-7 |
| ITF M15 Doboj | 2021/07/13 08:00 | Vladan Tadic v Marko Stakusic | 6-3,6-4 |
| ITF M15 Sarajevo | 2021/06/02 14:30 | Gauthier Onclin v Marko Stakusic | 6-1,6-1 |
| ITF M25 Kiseljak | 2021/05/25 12:55 | Gorazd Srbljak v Marko Stakusic | 4-6,6-3,6-2 |
| Challenger Granby | 2019/07/22 13:00 | Hunter Reese v Marko Stakusic | 6-4,7-5 |
| ITF Canada F7 | 2018/09/08 13:00 | Gabriel Diallo v Marko Stakusic | 6-2,6-4 |
| ITF M15 Doboj | 2021/07/12 11:00 | Petar Jovanovic v Carles Hernandez | 6-3,3-6,4-10 |
| ITF M15 Doboj | 2021/07/11 12:30 | Petar Jovanovic v Tadija Radovanovic | 6-3,6-2 |
| Davis Cup | 2021/06/26 07:55 | Petar Jovanovic v Nadir Sargsyan | 6-0,6-2 |
| Davis Cup | 2021/06/24 08:00 | Petar Jovanovic v Elvin Hashimov | 6-1,6-1 |
| Davis Cup | 2021/06/22 08:00 | Petar Jovanovic v Elbi Mjeshtri | 6-3,6-0 |
| 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 10:00 | Peter Goldsteiner v Petar Jovanovic | 6-7,4-6 |