Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Ulcinj | 2021/08/31 08:00 | Dominik Palan v Stefan Popovic | 6-1,6-1 |
| ITF M15 Novi Sad | 2021/08/04 14:15 | Stefan Popovic v Francisco Comesana | 3-6,2-6 |
| ITF M15 Novi Sad | 2021/07/27 11:00 | Pedro Boscardin Dias v Stefan Popovic | 6-4,6-3 |
| ITF M15 Antalya | 2021/01/29 07:00 | Leopold Zima v Stefan Popovic | 6-2,6-2 |
| ITF M15 Antalya | 2021/01/29 06:30 | Credit Chaiyarin v Stefan Popovic | 1-6,1-6 |
| ITF M15 Antalya | 2021/01/28 08:00 | Stefan Popovic v Filip Bergevi | 6-3,6-2 |
| Eastern European Championship | 2020/07/30 09:40 | Daniil Savelev v Stefan Popovic | 1-6,0-6 |
| Eastern European Championship | 2020/07/28 09:25 | Dejan Katic v Stefan Popovic | 3-6,2-6 |
| ITF M15 Torello | 2021/11/02 11:00 | John Echeverria v Florent Bax | 7-6,5-7,7-6 |
| ITF M15 Platja D'Aro | 2021/10/06 15:45 | Lorenzo Joaquin Rodriguez v Florent Bax | 6-1,6-7,6-2 |
| ITF M15 Platja D'Aro | 2021/10/05 08:00 | Florent Bax v Max Alcala Gurri | 6-4,1-6,10-4 |
| ITF M15 Platja D'Aro | 2021/10/04 11:00 | Florent Bax v Pietro Pampanin | 6-4,6-0 |
| ITF M15 Platja D'Aro | 2021/10/03 08:00 | Florent Bax v Leonardo Rossi | 6-3,6-2 |
| ITF M15 Ulcinj | 2021/09/08 11:55 | Florent Bax v Bastian Malla | 1-6,0-6 |
| ITF M15 Ulcinj | 2021/09/06 14:00 | Florent Bax v Lautaro Agustin Falabella | 6-3,6-4 |
| ITF M15 Ulcinj | 2021/09/06 07:30 | Florent Bax v Felipe Derdoy | 6-1,6-4 |