| UTR Pro Tennis Series Copenhagen | 2021/10/22 08:30 | Adam Heinonen v Marius Ruzgas | 3-6,6-3,3-5 |
| 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 |
| UTR Pro Tennis Series Copenhagen | 2021/10/22 11:30 | Oleg Stepanenko v Myroslav Bondar | 4-6,7-5,6-2 |
| UTR Pro Tennis Series Copenhagen | 2021/10/20 11:00 | Oleg Stepanenko v Caspar Jalili Mikkelsen | 2-6,0-5 |