Stadium: Court 9 Round: 54 Ground: Clay
| ITF M15 Vejle | 2021/07/25 07:00 | Adam Heinonen v Philip Hjorth | 1-6,6-4,8-10 |
| ITF M15 Antalya | 2021/05/09 07:00 | Adam Heinonen v Riccardo Di Nocera | 3-6,6-2,2-10 |
| ITF M15 Antalya | 2021/05/02 06:00 | Adam Heinonen v Valentin Vanta | 3-6,6-3,6-10 |
| ITF M15 Ystad | 2019/08/08 13:10 | Adam Heinonen v Patrik Niklas-Salminen | 4-6,5-7 |
| ITF M15 Ystad | 2019/08/07 08:15 | Adam Heinonen v Piotr Grynkowski | 2-6,6-3,7-5 |
| ITF M15 Ystad | 2019/08/06 10:05 | Adam Heinonen v Rana-Roop Singh Bhullar | 7-5,6-2 |
| ITF M15 Ystad | 2019/08/05 11:25 | Masi Sarpola v Adam Heinonen | 2-6,7-5,7-10 |
| ITF M15 Kalmar | 2019/05/14 08:15 | Adil Kalyanpur v Adam Heinonen | 6-4,6-2 |
| UTR Pro Tennis Series Copenhagen | 2021/06/19 07:00 | Nikolaj Katic v Warren Sinius | 4-5 |
| UTR Pro Tennis Series Copenhagen | 2021/06/18 11:00 | Benjamin Hannestad v Nikolaj Katic | 6-4,6-1 |
| UTR Pro Tennis Series Copenhagen | 2021/06/17 08:00 | Daniel De Jonge v Nikolaj Katic | 4-6,6-4,6-0 |
| ITF Turkey F3 | 2018/01/20 09:00 | Nikolaj Katic v Roberts Grinvalds | 0-6,4-6 |
| ITF Turkey F1 | 2018/01/07 08:30 | Zizou Bergs v Nikolaj Katic | 6-2,6-1 |
| ITF Turkey F1 | 2018/01/06 09:00 | Philipp Sikorski v Nikolaj Katic | 2-6,6-1,2-6 |
| ITF Turkey F47 Qual | 2017/12/09 06:45 | Gregorio Cordonnier v Nikolaj Katic | 6-7,6-4,6-2 |
| ITF Turkey F46 Qual | 2017/12/02 06:45 | Maurizio Speziali v Nikolaj Katic | 6-1,4-6,6-1 |