Stadium: Court 1 Round: 25 Ground: Clay
| ITF - M25 Wroclaw | 2021/06/27 15:30 | Luca Castelnuovo v Piotr Grynkowski | 6-4,6-7,7-10 |
| ITF M25 - Klosters | 2021/06/23 10:30 | Luca Castelnuovo v Tim Handel | 6-7,2-6 |
| ITF M25 - Klosters | 2021/06/21 07:00 | Luca Castelnuovo v Leopold Zima | 6-2,3-6,10-6 |
| ITF M25 - Klosters | 2021/06/20 07:00 | Luca Castelnuovo v Nico Jaeger | 4-6,6-3,11-9 |
| ITF - M15 Gaiba | 2021/06/08 13:35 | Luca Castelnuovo v Osgar O'Hoisin | 3-6,7-5,8-10 |
| ITF - M15 Gaiba | 2021/06/07 10:00 | Luca Castelnuovo v Gregorio De Gasper | 6-4,6-4 |
| ITF - M15 Kouvola | 2021/05/28 07:15 | Luca Castelnuovo v Naoki Tajima | 3-6,2-6 |
| ITF - M15 Kouvola | 2021/05/27 11:25 | Luca Castelnuovo v Simonas Zukauskas | 6-1,6-3 |
| ITF - M25 Most | 2021/05/24 08:00 | Jakub Beran v Jan Jermar | 6-4,6-7,10-3 |
| ITF - M25 Jablonec Nad Nisou | 2021/05/17 07:30 | Jan Jermar v Kai Lemstra | 4-6,4-6 |
| ITF - M25 Jablonec Nad Nisou | 2021/05/16 08:30 | Jan Jermar v Peter Samosi | 7-6,6-0 |
| ITF M25 - Praga | 2021/05/09 10:00 | Ondrej Horak v Jan Jermar | 7-6,6-3 |
| ITF M15 Las Palmas | 2021/04/25 11:00 | Jan Jermar v Xavier Gabarro | 0-6,2-6 |
| ITF - M15 Sibenik | 2021/04/18 10:00 | Petr Hajek v Jan Jermar | 6-2,6-1 |
| ITF - M15 Sharm El Sheikh | 2021/04/05 10:00 | Sean Hodkin v Jan Jermar | 7-5,6-2 |
| ITF - M15 Sharm El Sheikh | 2021/04/04 07:30 | Shahar Gabay v Jan Jermar | 1-6,1-6 |