Stadium: Court 8 Round: 26 Ground: Clay
| ITF M25 The Hague | 2021/06/29 15:00 | Kelly, Dayne v Guy Den Heijer | 6-1,6-4 |
| ITF M25 Montauban | 2021/06/24 10:00 | Valentin Royer v Kelly, Dayne | 7-6,6-2 |
| ITF M25 Montauban | 2021/06/23 08:25 | Pourroy, Loris v Kelly, Dayne | 4-6,4-6 |
| Orlando, USA | 2021/06/08 16:00 | Kelly, Dayne v Guido Andreozzi | 6-4,4-6,5-7 |
| Orlando, USA | 2021/06/07 16:00 | Bangoura, Sekou v Kelly, Dayne | 6-7,3-6 |
| Orlando, USA | 2021/06/06 19:00 | Kelly, Dayne v Redlicki, Michael | 6-2,6-1 |
| Little Rock, USA | 2021/06/03 17:00 | Kelly, Dayne v Oliver Crawford | 4-6,1-6 |
| Little Rock, USA | 2021/06/02 16:30 | Kelly, Dayne v Nick Chappell | 6-1,7-5 |
| ITF M25 The Hague | 2021/07/01 07:30 | Tepavac, Marko v Daniel De Jonge | 7-5,6-1 |
| ITF M25 Alkmaar | 2021/06/25 11:50 | Tepavac, Marko v Jelle Sels | 5-7,1-6 |
| ITF M25 Alkmaar | 2021/06/24 12:00 | Tepavac, Marko v Ryan Nijboer | 4-6,7-6,6-1 |
| ITF M25 Alkmaar | 2021/06/23 11:15 | Ergi Kirkin v Tepavac, Marko | 4-6,3-6 |
| ITF M15 Skopje | 2021/06/09 10:50 | Tepavac, Marko v Martin Damm | 5-7,3-6 |
| Belgrade, Serbia | 2021/05/22 10:35 | Tepavac, Marko v Lukas Klein | 4-6,1-6 |
| ITF - M15 Prijedor | 2021/05/12 11:00 | Tepavac, Marko v Matheus P De Almeida | 4-6,5-7 |
| Challenger Belgrade | 2021/04/11 13:00 | Martin, Andrej v Tepavac, Marko | 1-6,7-6,7-5 |