Stadium: Eden 9 Round: 62 Ground: Clay
| ITF M15 Heraklion | 2021/11/29 10:00 | Jan Kupcic v Radu F Macovei | 6-4,1-6,4-10 |
| ITF M15 Heraklion | 2021/11/23 07:00 | Aristotelis Thanos v Jan Kupcic | 6-0,6-2 |
| ITF M15 Heraklion | 2021/11/22 11:00 | Jan Kupcic v Sean Hodkin | 7-6,0-6,10-8 |
| ITF M15 Bad Waltersdorf | 2021/08/29 07:00 | Jan Kupcic v Alberto Morolli | 6-1,3-6,8-10 |
| ITF M25 Kiseljak | 2021/05/24 12:15 | Jan Kupcic v Rrezart Cungu | 6-4,0-6,4-10 |
| ITF M25 Kiseljak | 2021/05/23 10:45 | Jan Kupcic v Max Van Wijk | 2-6,0-6 |
| ITF M15 Sibenik | 2021/05/17 11:00 | Jan Kupcic v Taiyo Yamanaka | 5-7,6-0,4-10 |
| ITF M15 Sibenik | 2021/05/16 07:30 | Benedikt Emesz v Jan Kupcic | 1-6,6-4,6-10 |
| Adriatic Tennis Series | 2020/06/15 08:00 | Luka Mikrut v Stjepan Anisic | 6-0,6-2 |