Stadium: Court 3 Round: 44 Ground: Clay
| ITF M15 Warmbad-Villach | 2021/08/18 08:00 | Hajek, Petr v Kocevar-Desman, Tom | 4-6,7-5,4-6 |
| ITF M15 Warmbad-Villach | 2021/08/17 08:00 | Hajek, Petr v Ioannis Xilas | 6-3,7-6 |
| ITF M15 Warmbad-Villach | 2021/08/16 12:30 | Hajek, Petr v Valentino, Daniele | 6-3,6-1 |
| ITF M15 Gdynia | 2021/08/12 08:00 | Filip Peliwo v Hajek, Petr | 6-1,6-3 |
| ITF M15 Gdynia | 2021/08/11 12:30 | Hajek, Petr v Maks Kasnikowski | 6-4,6-7,7-5 |
| ITF M15 Gdynia | 2021/08/10 08:00 | Hajek, Petr v Pieczonka, Filip | 5-7,4-6 |
| ITF M15 Gdynia | 2021/08/09 10:30 | Hajek, Petr v Zukauskas, Simonas | 6-0,6-1 |
| ITF - M15 Héraklion | 2021/06/06 07:30 | Hajek, Petr v Papounidis, Ioannis | 4-6,7-5,6-10 |
| ITF M15 Warmbad-Villach | 2021/08/21 11:00 | Peter Heller v Gabriel Decamps | 7-5,6-2 |
| ITF M15 Warmbad-Villach | 2021/08/20 12:50 | Gabriel Decamps v Krainer, L. | 6-2,6-3 |
| ITF M15 Warmbad-Villach | 2021/08/19 10:45 | Capecchi, Daniele v Gabriel Decamps | 7-5,2-6,2-6 |
| ITF M15 Warmbad-Villach | 2021/08/18 12:45 | Gabriel Decamps v Jonas Trinker | 6-1,7-6 |
| ITF M15 Warmbad-Villach | 2021/08/17 08:00 | Martin Zeljenka v Gabriel Decamps | 2-6,2-6 |
| ITF M15 Warmbad-Villach | 2021/08/15 07:00 | Greif, Jonas v Gabriel Decamps | 0-6,2-6 |
| ITF M15 Frederiksberg | 2021/08/04 07:50 | Hannestad, Benjamin v Gabriel Decamps | 6-4,6-2 |
| ITF M15 Frederiksberg | 2021/08/02 12:35 | Gabriel Decamps v Emesz, Benedikt | 6-1,6-4 |