Stadium: Hard 20 Round: 27 Ground: Hardcourt outdoor
| ITF M15 Heráklion | 2021/11/11 07:00 | Tim Handel v Kai Lemstra | 3-6,6-7 |
| ITF M15 Heráklion | 2021/11/10 09:20 | Karlis Ozolins v Kai Lemstra | 3-6,6-7 |
| ITF M15 Heráklion | 2021/11/09 07:00 | Kai Lemstra v Christopher Patzanovsky | 6-2,6-4 |
| ITF M15 Heráklion | 2021/11/07 12:00 | Kai Lemstra v Drew Van Orderlain | 6-2,6-3 |
| ITF M15 Selva Gardena | 2021/10/27 08:00 | Kai Lemstra v Mattia Bellucci | 3-6,3-6 |
| ITF M15 Selva Gardena | 2021/10/26 07:30 | Kai Lemstra v Carlo Alberto Fossati | 6-4,7-5 |
| ITF M15 Selva Gardena | 2021/10/25 08:30 | Kai Lemstra v Dominique Graf | 7-5,6-2 |
| ITF M15 Selva Gardena | 2021/10/24 10:45 | Kai Lemstra v Davide Ferrarolli | 6-4,6-3 |
| ITF M15 Heráklion | 2021/11/11 10:30 | Michael Weindl v Peter Fajta | 6-3,6-7,6-7 |
| ITF M15 Heráklion | 2021/11/09 10:35 | Evangelos Kypriotis v Peter Fajta | 1-6,0-6 |
| ITF M15 Heráklion | 2021/11/06 08:30 | Kyle Seelig v Peter Fajta | 6-4,6-2 |
| ITF M15 Heráklion | 2021/11/05 08:45 | Mark Lajal v Peter Fajta | 4-6,6-2,4-6 |
| ITF M15 Heráklion | 2021/11/04 08:30 | Hazem Naw v Peter Fajta | 3-6,4-6 |
| ITF M15 Heráklion | 2021/11/03 08:45 | Alexandros Skorilas v Peter Fajta | 4-6,4-6 |
| ITF M15 Sharm El Sheikh | 2021/10/23 08:00 | Hady Habib v Peter Fajta | 7-6,6-2 |
| ITF M15 Sharm El Sheikh | 2021/10/22 08:00 | Haoyuan Huang v Peter Fajta | 3-6,6-7 |