Stadium: Court 6 Round: 26 Ground: Clay
| ITF M25 Alkmaar | 2021/06/23 11:15 | Ergi Kirkin v Marko Tepavac | 4-6,3-6 |
| ITF M15 Szkopje | 2021/06/09 10:50 | Marko Tepavac v Martin Damm | 5-7,3-6 |
| ATP Belgrád | 2021/05/22 10:35 | Marko Tepavac v Lukas Klein | 4-6,1-6 |
| ITF M15 Prijedor | 2021/05/12 11:00 | Marko Tepavac v Matheus P De Almeida | 4-6,5-7 |
| Challenger Belgrade | 2021/04/11 13:00 | Andrej Martin v Marko Tepavac | 1-6,7-6,7-5 |
| ITF M15 Sharm El Sheikh | 2021/02/12 09:20 | Marek Gengel v Marko Tepavac | 6-4,6-4 |
| ITF M15 Sharm El Sheikh | 2021/02/11 07:30 | Marko Tepavac v Sandro Ehrat | 6-4,6-4 |
| ITF M15 Sharm El Sheikh | 2021/02/10 08:55 | Paul Jubb v Marko Tepavac | 3-6,7-6,4-6 |
| ITF M15 Szkopje | 2021/06/10 11:30 | Miljan Zekic v Ryan Nijboer | 6-2,6-3 |
| ITF M15 Szkopje | 2021/06/10 07:45 | Ryan Nijboer v Dian Nedev | 6-3,6-2 |
| ITF M15 Szkopje | 2021/06/06 07:55 | Alexis Gautier v Ryan Nijboer | 6-2,3-6,6-2 |
| ITF M15 Szkopje | 2021/06/05 10:40 | Dalibor Svrcina v Ryan Nijboer | 6-1,4-6,5-7 |
| ITF M15 Szkopje | 2021/06/04 10:25 | Alexander Weis v Ryan Nijboer | 6-7,6-7 |
| ITF M15 Szkopje | 2021/06/03 09:30 | Ryan Nijboer v Alex Rybakov | 2-6,7-6,6-4 |
| ITF M15 Szkopje | 2021/06/02 09:55 | Niels Visker v Ryan Nijboer | 6-4,3-6,4-6 |
| ITF M25 Vic | 2021/05/19 09:00 | Ryan Nijboer v Facundo Juarez | 6-3,4-6,4-6 |