Estadio: Kvarner 1 Round: 62 Ground: Clay
| ITF M25 Opatija | 2022/03/20 11:30 | Adam Heinonen v Gasper Bezjak | 6-3,6-4 |
| ITF M25 Rovinj | 2022/03/14 09:00 | Filippo Giovannini v Adam Heinonen | 2-6,6-2,13-11 |
| ITF M25 Rovinj | 2022/03/13 09:00 | David Tomic v Adam Heinonen | 1-6,1-6 |
| UTR Pro Tennis Series - Copenhage | 2021/10/24 07:00 | Adam Heinonen v Jose Antonio Rodriguez Rodriguez | 6-4,6-1 |
| UTR Pro Tennis Series - Copenhage | 2021/10/23 07:00 | Adam Heinonen v Oleg Stepanenko | 6-2,5-1 |
| UTR Pro Tennis Series - Copenhage | 2021/10/22 08:30 | Adam Heinonen v Marius Ruzgas | 3-6,6-3,3-5 |
| UTR Pro Tennis Series - Copenhage | 2021/10/20 08:30 | Adam Heinonen v Simon Friis Soendergaard | 1-6,2-6 |
| UTR Pro Tennis Series - Copenhage | 2021/10/19 07:00 | Adam Heinonen v Alexander Stage | 6-3,6-3 |
| ITF M25 Rovinj | 2022/03/16 10:40 | Javier Barranco Cosano v Marko Andrejic | 6-3,6-1 |
| ITF M25 Rovinj | 2022/03/15 09:00 | Bozo Barun v Marko Andrejic | 6-3,5-7,6-10 |
| ITF M25 Rovinj | 2022/03/14 09:00 | Marko Andrejic v Lorenzo Favero | 6-3,6-0 |
| ITF M25 Rovinj | 2022/03/13 09:00 | Luca Parenti v Marko Andrejic | 4-6,7-5,4-10 |
| ITF M25 Monastir | 2022/02/13 13:00 | Marko Andrejic v Marco De Rossi | 3-6,4-6 |
| Austria - Campeonato de tenis | 2020/07/07 09:00 | Lenny Hampel v Marko Andrejic | 6-2,6-1 |
| Austria - Campeonato de tenis | 2020/07/01 10:50 | Marko Andrejic v Lenny Hampel | 7-5,1-6,2-6 |
| Austria - Pro Series | 2020/05/30 16:00 | Marko Andrejic v Neil Oberleitner | 6-7,3-6 |