| ITF M15 Monastir | 06/30 09:30 | 26 | Keisuke Saitoh v Terence Atmane | 3-6,4-6 | |
| ITF M15 Monastir | 06/29 09:35 | 25 | Keisuke Saitoh v Chukang Wang | 6-1,6-3 | |
| ITF M15 Monastir | 06/23 08:00 | 26 | Xiaofei Wang v Keisuke Saitoh | 2-6,6-1,6-4 | |
| ITF M15 Monastir | 06/21 08:00 | 25 | Gabriele Bosio v Keisuke Saitoh | 4-6,5-7 | |
| ITF M15 Monastir | 06/17 08:00 | 27 | Skander Mansouri v Keisuke Saitoh | 6-3,6-1 | |
| ITF M15 Monastir | 06/16 09:40 | 26 | Joshua Charlton v Keisuke Saitoh | 6-4,4-6,3-6 | |
| ITF M15 Monastir | 06/14 08:00 | 25 | Keisuke Saitoh v Ray Ho | 6-3,6-4 | |
| ITF M15 Ulcinj | 05/27 08:30 | 27 | Keisuke Saitoh v Marcello Serafini | Retired | |
| ITF M15 Ulcinj | 05/26 12:40 | 26 | Maxime Chazal v Keisuke Saitoh | 5-7,2-6 | |
| ITF M15 Ulcinj | 05/24 13:05 | 25 | Kiyan Santino Kasemi v Keisuke Saitoh | 0-6,1-6 | |
| ITF M25 Ulcinj | 05/17 10:15 | 25 | Juan Pablo Paz v Keisuke Saitoh | 6-2,6-2 | |
| ITF M15 Ulcinj | 05/13 08:00 | 27 | Keisuke Saitoh v Valentin Royer | 3-6,4-6 |