Stadium: Court 4 Round: 62 Ground: Clay
| ITF M15 Novi Sad | 2021/08/01 08:30 | Daniil Savelev v Sabit Suntic | 7-5,1-6,4-10 |
| ITF M15 Novi Sad | 2021/07/25 07:00 | Rana-Roop Singh Bhullar v Sabit Suntic | 7-6,6-4 |
| ITF M15 Doboj | 2021/07/12 09:30 | Danijal Muminovic v Sabit Suntic | 6-0,6-2 |
| ITF M15 Doboj | 2021/07/11 08:15 | Sabit Suntic v Andreja Petrovic | 5-7,6-2,10-7 |
| ITF M15 Antalya | 2021/06/27 06:30 | Sabit Suntic v Samuil Konov | 4-6,3-6 |
| ITF M15 Sarajevo | 2021/05/30 07:30 | Erdem Isitan v Sabit Suntic | 6-0,4-6,10-4 |
| ITF M25 Kiseljak | 2021/05/23 13:15 | Drazen Petrovic v Sabit Suntic | 6-3,5-7,10-5 |
| ITF M15 Monastir | 2021/04/13 08:30 | Sabit Suntic v Danylo Kalenichenko | 0-6,1-6 |
| ITF M15 Novi Sad | 2021/07/26 07:30 | Tadeas Paroulek v Roko Horvat | 6-4,7-5 |
| ITF M15 Novi Sad | 2021/07/25 09:30 | Roko Horvat v Lazar Vojinovic | 6-2,3-6,10-3 |
| 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 |