Stadium: Court 10 Round: 25 Ground: Clay
| Challenger Almaty | 2021/06/15 11:50 | Zizou Bergs v Ergi Kirkin | 6-4,5-7,6-2 |
| Challenger Almaty | 2021/06/14 04:00 | Ergi Kirkin v Vladyslav Manafov | 6-2,6-3 |
| Challenger Almaty - selejtezők | 2021/06/13 04:00 | Evan Furness v Ergi Kirkin | 4-6,7-6,5-7 |
| Challenger Almaty | 2021/06/06 04:00 | Vitaliy Sachko v Ergi Kirkin | 3-6,7-5,6-2 |
| ITF M25 Most | 2021/05/27 10:45 | Ergi Kirkin v Daniel Michalski | 4-6,0-6 |
| ITF M25 Most | 2021/05/25 11:30 | Viktor Durasovic v Ergi Kirkin | 7-6,5-7,2-6 |
| ITF M25 Jablonec Nad Nisou | 2021/05/19 09:45 | Ergi Kirkin v Robin Stanek | 3-6,7-6,4-6 |
| Challenger Heilbronn | 2021/05/11 10:25 | Ergi Kirkin v Joao Menezes | 6-7,6-2,5-7 |
| 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 Sharm El Sheikh | 2021/02/05 07:30 | Marko Tepavac v Arnaud Bovy | 6-7,6-3,2-6 |