| UTR Pro Tennis Series Copenhagen | 2021/10/20 08:30 | Adam Heinonen v Simon Friis Soendergaard | 1-6,2-6 |
| UTR Pro Tennis Series Copenhagen | 2021/10/19 07:00 | Adam Heinonen v Alexander Stage | 6-3,6-3 |
| UTR Pro Tennis Series Copenhagen | 2021/10/18 08:30 | Drew Van Orderlain v Adam Heinonen | 4-6,5-7 |
| ITF M25 Falun | 2021/09/26 08:00 | Sebastian Eriksson v Adam Heinonen | 6-2,4-6,12-10 |
| ITF M25 Jonkoping | 2021/09/20 07:30 | Arvid Nordquist v Adam Heinonen | 6-3,6-4 |
| ITF M15 Frederiksberg | 2021/08/02 08:50 | Adam Heinonen v Christopher Patzanovsky | 3-6,4-6 |
| ITF M15 Frederiksberg | 2021/08/01 08:00 | Adam Heinonen v Nikolaj Katic | 6-3,6-7,10-6 |
| ITF M15 Vejle | 2021/07/25 07:00 | Adam Heinonen v Philip Hjorth | 1-6,6-4,8-10 |
| UTR Pro Tennis Series Copenhagen | 2021/10/21 08:30 | Alexander Stage v Marius Ruzgas | 2-6,2-6 |
| UTR Pro Tennis Series Copenhagen | 2021/10/19 08:30 | Drew Van Orderlain v Marius Ruzgas | 3-6,4-6 |
| UTR Pro Tennis Series Copenhagen | 2021/10/18 10:00 | Marius Ruzgas v Simon Friis Soendergaard | 2-6,4-5 |
| ITF M25 Falun | 2021/09/27 12:00 | Marius Ruzgas v Mans Dahlberg | 5-7,4-6 |
| ITF M25 Jonkoping | 2021/09/20 10:30 | Marius Ruzgas v Mats Rosenkranz | 5-7,5-7 |
| ITF M15 Frederiksberg | 2021/08/04 08:00 | Marius Ruzgas v Vasil Kirkov | 2-6,2-6 |
| ITF M15 Vejle | 2021/07/27 09:15 | Marius Ruzgas v Alexander Kotzen | 2-6,6-4,3-6 |
| UTR Pro Tennis Series Copenhagen | 2021/06/19 10:00 | Daniel De Jonge v Marius Ruzgas | 3-6,7-6,6-1 |