Stadium: Swiss Post Court Round: 62 Ground: Clay
| ITF M15 Antalya | 2021/03/25 07:00 | Guy Den Heijer v Juan Pablo Paz | 1-6,2-6 |
| ITF M15 Antalya | 2021/03/24 06:30 | Guy Den Heijer v Carlo Alberto Fossati | 6-2,6-3 |
| ITF M15 Antalya | 2021/03/22 07:00 | Guy Den Heijer v Vladislav Gorbatenko | 7-5,6-0 |
| ITF M15 Antalya | 2021/03/21 07:00 | Guy Den Heijer v Alexander Ovcharov | 6-1,6-2 |
| ITF M15 Antalya | 2021/03/17 08:00 | Koray Kirci v Guy Den Heijer | 6-4,6-2 |
| ITF M15 Antalya | 2021/03/16 07:00 | Guy Den Heijer v Giovanni Rizzuti | 7-5,6-2 |
| ITF M15 Antalya | 2021/03/15 08:30 | Guy Den Heijer v Juan Ignacio Alcalde | 6-1,6-1 |
| ITF M15 Antalya | 2021/03/14 07:00 | Guy Den Heijer v Andrea Gola | 6-1,6-3 |
| ITF M25 Meerbusch | 2021/04/12 12:00 | Alexey Vatutin v Tom Gentzsch | 6-3,6-1 |
| ITF M25 Meerbusch | 2021/04/12 07:30 | Tom Gentzsch v Fred Olivier Schommer | 7-6,6-2 |