| UTR Pro Tennis Series Copenhagen | 2021/06/20 11:00 | Jesper Klov Nilsson v Gustav Theilgaard | 3-6,0-3 |
| UTR Pro Tennis Series Copenhagen | 2021/06/19 11:30 | Gustav Theilgaard v Hugo Pierre | 6-4,7-5 |
| UTR Pro Tennis Series Copenhagen | 2021/06/18 08:00 | Sebastian Grundtvig Jorgensen v Gustav Theilgaard | 6-4,6-2 |
| UTR Pro Tennis Series Copenhagen | 2021/06/17 11:00 | Henrik Atlevi v Gustav Theilgaard | 5-7,2-6 |
| UTR Pro Tennis Series Copenhagen | 2021/06/15 08:22 | Maxim Landa v Gustav Theilgaard | 7-5,6-4 |
| ITF M15 Winston-Salem | 2022/11/08 17:30 | James Story v Oskar Brostrom Poulsen | 6-4,6-4 |
| ITF M15 Winston-Salem | 2022/11/07 18:00 | Varun Jayaram v Oskar Brostrom Poulsen | 2-6,1-6 |
| ITF M15 Frederiksberg | 2022/08/04 07:30 | Oskar Brostrom Poulsen v August Holmgren | 7-6,2-6,1-6 |
| ITF M15 Frederiksberg | 2022/08/02 07:30 | Oskar Brostrom Poulsen v Jonas P Hartenstein | 6-4,6-3 |
| ITF M15 Vejle | 2022/07/27 13:45 | Oskar Brostrom Poulsen v Lewie Lane | 6-7,4-6 |
| UTR Pro Tennis Series Florida | 2021/12/17 14:00 | Martim L Prata v Oskar Brostrom Poulsen | 6-3,2-1 |
| UTR Pro Tennis Series Florida | 2021/12/16 15:30 | Alexander Kotzen v Oskar Brostrom Poulsen | 6-3,6-0 |
| UTR Pro Tennis Series Florida | 2021/12/14 14:00 | Connor Krug v Oskar Brostrom Poulsen | 7-5,6-7,5-1 |