Stadium: Court 1 Round: 25 Ground: Clay
| ITF M15 Novi Sad | 2021/07/25 12:00 | Gabriel Donev v Durguti, Besir | 6-1,6-1 |
| ITF M15 Skopje | 2021/05/31 11:00 | Durguti, Besir v Taiyo Yamanaka | 2-6,2-6 |
| ITF M15 Brcko | 2021/05/17 15:30 | Durguti, Besir v Milanovic, Dusan | 3-6,2-6 |
| ITF - M15 Prijedor | 2021/05/09 07:00 | Kawakami, Rimpei v Durguti, Besir | 6-3,6-2 |
| ITF - M15 Antalya | 2021/03/08 10:00 | Bertuccioli, Federico v Durguti, Besir | 6-3,3-6,10-7 |
| ITF - M15 Antalya | 2021/02/28 08:00 | Durguti, Besir v Mathys Erhard | 1-6,3-6 |
| ITF - M15 Antalya | 2020/03/09 08:00 | Sergi Perez Contri v Durguti, Besir | 6-2,6-2 |
| ITF - M15 Antalya | 2020/03/08 08:00 | Donmezer, Enes v Durguti, Besir | 0-2 |
| ITF M15 Ulcinj | 2021/08/30 11:30 | Aristotelis Thanos v Tomas, Aleksandar | 5-7,2-6 |
| ITF M15 Ulcinj | 2021/08/30 07:30 | Manasov, Ivan v Tomas, Aleksandar | 1-6,1-6 |
| ITF M15 Novi Sad | 2021/08/04 09:45 | Tomas, Aleksandar v Mariano Navone | 1-6,1-6 |
| ITF M15 Novi Sad | 2021/08/03 09:40 | Tomas, Aleksandar v Drazen Petrovic | 6-7,6-0,10-8 |
| ITF M15 Novi Sad | 2021/08/02 09:30 | Tomas, Aleksandar v Habsuda, Simon | 6-1,6-0 |
| ITF M15 Novi Sad | 2021/08/01 09:30 | Nincevic, Frane v Tomas, Aleksandar | 6-4,3-6,6-10 |
| ITF M15 Novi Sad | 2021/07/26 10:30 | Tomas, Aleksandar v Koray Kirci | 4-6,2-6 |
| ITF M25 Telfs | 2021/07/13 11:10 | Gonzalo Lama v Tomas, Aleksandar | 6-3,6-1 |