Stadium: Court 4 Round: 44 Ground: Clay
| ITF M15 Brcko | 2021/05/18 14:00 | Obrad Markovski v Aleksandar Tomas | 4-6,1-6 |
| ITF M15 Novi Sad | 2021/08/04 09:45 | Aleksandar Tomas v Mariano Navone | 1-6,1-6 |
| ITF M15 Novi Sad | 2021/08/03 09:40 | Aleksandar Tomas v Drazen Petrovic | 6-7,6-0,10-8 |
| ITF M15 Novi Sad | 2021/08/02 09:30 | Aleksandar Tomas v Simon Habsuda | 6-1,6-0 |
| ITF M15 Novi Sad | 2021/08/01 09:30 | Frane Nincevic v Aleksandar Tomas | 6-4,3-6,6-10 |
| ITF M15 Novi Sad | 2021/07/26 10:30 | Aleksandar Tomas v Koray Kirci | 4-6,2-6 |
| ITF M25 Telfs | 2021/07/13 11:10 | Gonzalo Lama v Aleksandar Tomas | 6-3,6-1 |
| ITF M25 Belgrade | 2021/06/27 07:00 | Aleksandar Tomas v Petar Pjevcevic | 3-6,1-6 |
| ITF M15 Antalya | 2021/06/20 07:00 | Daiki Yoshimura v Aleksandar Tomas | 6-1,6-3 |
| ITF M15 Novi Sad | 2021/08/01 11:15 | Simon Habsuda v Obrad Markovski | 1-6,6-3,11-9 |
| ITF M15 Sofia | 2021/07/04 06:30 | Obrad Markovski v Denislav Prodanov | 1-6,7-5,7-10 |
| ITF M15 Skopje | 2021/06/11 07:00 | Alexis Gautier v Obrad Markovski | 6-4,6-3 |
| ITF M15 Skopje | 2021/06/10 08:35 | Kalin Ivanovski v Obrad Markovski | 6-3,4-6,4-6 |
| ITF M15 Skopje | 2021/05/31 12:30 | Stefano Battaglino v Obrad Markovski | 6-2,5-7,10-7 |
| ITF M25 Kiseljak | 2021/05/23 07:00 | Stefan Micov v Obrad Markovski | 6-3,6-7,10-5 |
| ITF M15 Brcko | 2021/05/18 14:00 | Obrad Markovski v Aleksandar Tomas | 4-6,1-6 |
| ITF M15 Brcko | 2021/05/16 14:00 | Obrad Markovski v Stefan Ivic | 6-4,6-2 |