Stadium: Court 3 Round: 62 Ground: Hardcourt outdoor
| ITF M25 Al Zahra | 2023/01/25 13:20 | Guy Den Heijer v Prajnesh Gunneswaran | 1-6,6-7 |
| ITF M25 - Doha | 2023/01/16 12:00 | Denis Klok v Guy Den Heijer | 6-2,3-6,10-5 |
| ITF M25 - Doha | 2023/01/15 14:15 | Adel Ghanim v Guy Den Heijer | 0-6,1-6 |
| ITF M15 - Doha | 2023/01/12 13:15 | Guy Den Heijer v Kristjan Tamm | 4-6,6-7 |
| ITF M15 - Doha | 2023/01/11 12:00 | Samir Hamza Reguig v Guy Den Heijer | 3-6,1-6 |
| ITF M15 - Doha | 2023/01/10 12:00 | Guy Den Heijer v Arslanbek Aitkulov | 6-2,7-5 |
| ITF M25 - Oldenzaal | 2022/08/25 16:55 | Max Houkes v Guy Den Heijer | 6-1,6-3 |
| ITF M25 - Oldenzaal | 2022/08/24 11:50 | Thijmen Loof v Guy Den Heijer | 3-6,5-7 |
| ITF M25 - Vila Real de Santo Antonio | 2023/02/13 15:10 | Seydina Andre v Stepan Pecak | 6-4,6-3 |
| ITF M25 - Vila Real de Santo Antonio | 2023/02/05 10:00 | Glauco Pinheiro Da Cruz Junior v Stepan Pecak | 5-7,6-3,10-3 |
| ITF M25 - Nussloch | 2023/01/22 08:30 | Gabriel Matuszewski v Stepan Pecak | 6-2,6-2 |
| ITF M15 - Bressuire | 2023/01/15 13:35 | Stepan Pecak v Oscar Lacides | 4-6,3-6 |
| ITF M15 - Heraklion | 2022/10/23 10:00 | Arthur Van Der Kooij v Stepan Pecak | 6-2,6-7,10-5 |
| ITF M15 - Prostejov | 2022/09/25 09:00 | Noah Schlagenhauf v Stepan Pecak | 3-6,6-4,10-5 |
| ITF M25 - Pardubice | 2022/09/19 09:00 | Jiri Jenicek v Stepan Pecak | 6-2,6-7,10-7 |
| ITF M15 - Haren | 2022/08/29 09:00 | Tomi Van den Ham v Stepan Pecak | 6-7,6-3,10-3 |