Stadium: Court 4 Round: 62 Ground: Clay
| ITF M15 Doboj | 2021/07/11 13:45 | Roko Horvat v Nicolas Bruna | 6-1,2-6,8-10 |
| ITF M25 Velenje | 2021/07/05 16:20 | Peter Goldsteiner v Roko Horvat | 7-6,6-4 |
| ITF M25 Velenje | 2021/07/04 07:30 | Pietro Schiavetti v Roko Horvat | 6-2,3-6,6-10 |
| UTR Pro Tennis Series Zadar | 2021/07/03 07:00 | Matija Pecotic v Roko Horvat | 6-3,5-4 |
| UTR Pro Tennis Series Zadar | 2021/07/01 08:00 | Roko Horvat v Anatoliy Petrenko | 6-2,6-1 |
| UTR Pro Tennis Series Zadar | 2021/06/30 12:30 | Roko Horvat v Yaraslav Shyla | 5-7,6-3,3-5 |
| UTR Pro Tennis Series Zadar | 2021/06/29 09:30 | Roko Horvat v Elijah Poritzky | 6-0,6-3 |
| UTR Pro Tennis Series Zadar | 2021/06/28 11:00 | Roko Horvat v Rayane Oumaouche | 6-3,5-0 |
| ITF M15 Doboj | 2021/07/11 08:15 | Rrezart Cungu v Lazar Vojinovic | 6-3,6-3 |
| ITF M15 Sofia | 2021/07/04 10:30 | Radu F Macovei v Lazar Vojinovic | 4-6,7-6,10-4 |
| ITF M15 Sarajevo | 2021/05/30 09:00 | Valentin Lapalu v Lazar Vojinovic | 6-4,7-5 |
| ITF M15 Brcko | 2021/05/19 08:30 | Maximilian Neuchrist v Lazar Vojinovic | 6-3,6-4 |
| ITF M15 Brcko | 2021/05/18 09:30 | Drazen Petrovic v Lazar Vojinovic | 2-6,3-6 |
| ITF M15 Brcko | 2021/05/17 15:30 | Lazar Vojinovic v Luka Petrovic | 6-3,6-4 |
| 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 |