Stadium: Court 6 Round: 27 Ground: Hardcourt outdoor
| ITF M15 Monastir | 2022/02/10 08:30 | Guy Den Ouden v Alberto Barroso Campos | 6-4,7-5 |
| ITF M15 Monastir | 2022/02/09 11:30 | Guy Den Ouden v Andrea Guerrieri | 6-2,7-5 |
| ITF M25 Loughborough | 2022/01/25 12:50 | Martin Damm v Guy Den Ouden | 6-3,7-6 |
| ITF M25 Vilnius | 2022/01/18 10:35 | Fabian Marozsan v Guy Den Ouden | 3-6,6-1,6-4 |
| ITF M25 Bath | 2022/01/12 11:45 | Mark Whitehouse v Guy Den Ouden | 7-5,6-2 |
| ITF M15 Monastir | 2021/12/01 08:30 | Matas Vasiliauskas v Guy Den Ouden | 6-3,6-4 |
| ITF M15 Monastir | 2021/11/28 09:00 | Guy Den Ouden v Gabriel Decamps | 6-3,6-4 |
| ITF M15 Monastir | 2021/11/27 10:25 | Martyn Pawelski v Guy Den Ouden | 4-6,2-6 |
| ITF M15 Monastir | 2022/02/10 10:45 | Hikaru Shiraishi v Matic Spec | 3-6,6-3,6-4 |
| ITF M15 Monastir | 2022/02/09 13:50 | Alejandro Manzanera Pertusa v Hikaru Shiraishi | 2-6,2-6 |
| ITF M25 Monastir | 2022/02/07 14:00 | Kaito Uesugi v Hikaru Shiraishi | 4-6,4-6 |
| ITF M25 Monastir | 2022/02/07 09:00 | Hikaru Shiraishi v Dax Donders | 6-2,6-7,10-4 |
| ITF M25 Monastir | 2022/02/06 12:00 | Tanguy Genier v Hikaru Shiraishi | 0-6,3-6 |
| ITF M15 Akishima | 2019/06/14 03:00 | Hikaru Shiraishi v Yuta Kikuchi | 3-6,6-4,1-6 |
| ITF M15 Akishima | 2019/06/13 01:00 | Shohei Chikami v Hikaru Shiraishi | 5-7,3-6 |
| ITF M15 Akishima | 2019/06/11 07:25 | Niklas Johansson v Hikaru Shiraishi | 4-6,4-6 |