Stadium: Hard Court 2 Round: 62 Ground: Hardcourt outdoor
| ITF M25 Alkmaar | 2021/06/20 14:00 | Mats Rosenkranz v Gosse Panagoulopoulos | 6-0,6-2 |
| ITF M25 Jablonec Nad Nisou | 2021/05/18 07:30 | Robin Stanek v Gianluca Coloma-Heck | 6-1,6-1 |
| ITF M25 Jablonec Nad Nisou | 2021/05/17 07:30 | Vojtech Mares v Gianluca Coloma-Heck | 6-2,4-6,4-10 |
| ITF M25 Jablonec Nad Nisou | 2021/05/16 07:30 | Jakub Beran v Gianluca Coloma-Heck | 6-4,6-7,5-10 |
| ITF M15 Monastir | 2021/03/07 10:30 | Gianluca Coloma-Heck v Alexander Kotzen | 0-6,1-6 |
| ITF M15 Antalya | 2020/12/06 07:00 | Mert Alkaya v Gianluca Coloma-Heck | 2-6,6-2,10-4 |