Stadium: Court 1 Round: 62 Ground: Hardcourt outdoor
| Challenger Oeiras | 2022/03/28 11:20 | Ergi Kirkin v Guy Den Ouden | 6-4,6-4 |
| Challenger Oeiras | 2022/03/27 10:45 | Miguel Gomes v Guy Den Ouden | 3-6,2-6 |
| ITF M25 Quinta Do Lago | 2022/03/25 10:00 | Alec Deckers v Guy Den Ouden | 7-6,6-1 |
| ITF M25 Loule | 2022/03/17 13:45 | Guy Den Ouden v Jan Choinski | 6-7,3-6 |
| ITF M15 Monastir | 2022/02/23 12:30 | Alexandre Aubriot v Guy Den Ouden | 6-2,6-4 |
| ITF M15 Monastir | 2022/02/19 08:30 | Alberto Barroso Campos v Guy Den Ouden | 6-3,6-1 |
| ITF M15 Monastir | 2022/02/18 10:05 | Matic Spec v Guy Den Ouden | 6-4,3-6,2-6 |
| ITF M15 Monastir | 2022/02/17 12:30 | Diego A B Sanchez v Guy Den Ouden | 1-6,2-6 |