Stadium: Court 7 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Allershausen | 2021/09/05 11:00 | Guy Den Ouden v Veldheer, Mick | 6-0,6-4 |
| ITF M15 Allershausen | 2021/09/04 13:10 | Guy Den Ouden v Mats Rosenkranz | 6-4,4-6,6-4 |
| ITF M15 Allershausen | 2021/09/03 12:35 | Guy Den Ouden v Galarza, Juan Ignacio | 7-5,6-3 |
| ITF M15 Allershausen | 2021/09/02 13:40 | Peter Heller v Guy Den Ouden | 6-7,3-6 |
| ITF M15 Allershausen | 2021/09/01 11:30 | Guy Den Ouden v Hazem Naw | 6-4,3-6,6-4 |
| ITF M15 Huy | 2021/08/29 13:00 | Gauthier Onclin v Guy Den Ouden | 6-4,5-7,1-6 |
| ITF M15 Huy | 2021/08/28 11:00 | Raphael Collignon v Guy Den Ouden | 3-6,4-6 |
| ITF M15 Huy | 2021/08/27 11:00 | Dhoe, Benjamin v Guy Den Ouden | 2-6,2-6 |
| ITF - M15 Monastir | 2021/09/18 08:30 | Gabriel Decamps v Ryota Tanuma | 7-6,6-3 |
| ITF - M15 Monastir | 2021/09/17 07:55 | Axel Garcian v Ryota Tanuma | 1-6,4-6 |
| ITF - M15 Monastir | 2021/09/15 08:00 | Nemakal, Ajay Pruthvi v Ryota Tanuma | 1-6,1-6 |
| ITF M15 Cairo | 2021/09/09 08:00 | Biagio Gramaticopolo v Ryota Tanuma | 6-3,7-6 |
| ITF M15 Cairo | 2021/09/08 09:45 | Ivanov, Vladislav v Ryota Tanuma | 3-6,3-6 |
| ITF M15 Cairo | 2021/09/05 12:00 | Ragazzi, Alessandro v Ryota Tanuma | 7-6,6-2 |
| ITF M15 Cairo | 2021/09/04 12:15 | Ryota Tanuma v Quentin Folliot | 6-2,3-6,7-6 |
| ITF M15 Cairo | 2021/09/03 08:30 | Fellin, Manfred v Ryota Tanuma | 2-6,1-6 |