Stadium: MTA 22 Round: 62 Ground: Clay
| ITF M15 Antalya | 2021/02/08 07:00 | Guy Den Heijer v Benedikt Henning | 3-6,0-6 |
| ITF M15 Antalya | 2021/02/07 06:00 | Guy Den Heijer v Sidane Pontjodikromo | 7-5,2-6,10-8 |
| ITF M15 Antalya | 2021/02/01 11:00 | Guy Den Heijer v Leopold Zima | 4-6,3-6 |
| ITF M15 Antalya | 2021/01/29 07:00 | Timur Kiyamov v Guy Den Heijer | 4-6,3-6 |
| ITF M15 Antalya | 2021/01/29 07:00 | Joao Lucas Reis da Silva v Guy Den Heijer | 6-3,6-3 |
| ITF M15 Antalya | 2021/01/28 07:00 | Mark Tryakshin v Guy Den Heijer | 2-6,1-6 |
| ITF M15 Alkmaar | 2020/08/23 14:30 | Guy Den Heijer v Leon Hoeveler | 6-2,6-3 |
| ITF M15 Loulé | 2020/03/12 14:05 | Evan Hoyt v Guy Den Heijer | 6-2,5-7,1-6 |
| ITF M15 Antalya | 2021/02/28 07:00 | Oleksandr Ovcharenko v Michalis Sakellaridis | 6-2,6-2 |
| ITF M15 Antalya | 2021/02/21 06:00 | Michalis Sakellaridis v Giuseppe Tresca | 3-6,6-7 |
| ITF M15 Antalya | 2021/02/14 12:00 | Michalis Sakellaridis v Carlos Lopez Montagud | 2-6,5-7 |
| ITF M15 Antalya | 2021/02/02 07:00 | Michalis Sakellaridis v Dan Alexandru Tomescu | 4-6,0-6 |
| ITF M15 Antalya | 2021/01/28 08:00 | Michalis Sakellaridis v Nicolo Turchetti | 1-6,3-6 |
| ITF M15 Antalya | 2021/01/17 09:00 | Michalis Sakellaridis v Umut Akkoyun | 3-6,5-7 |
| ITF M15 Antalya | 2021/01/11 07:00 | Michalis Sakellaridis v Leopold Zima | 1-6,5-7 |
| ITF M15 Antalya | 2021/01/07 07:00 | Michalis Sakellaridis v Ilya Snitari | 2-6,0-6 |