Stadium: Court 4 Round: 26 Ground: Hardcourt outdoor
| ITF M15 Guam | 2019/06/04 00:00 | Kento Tagashira v Edward Lewis | 6-2,6-3 |
| ITF M15 Karuizawa | 2019/05/29 06:05 | Hayato Kudo v Kento Tagashira | 7-6,6-2 |
| ITF M15 Kampala | 2019/05/22 10:35 | Kento Tagashira v Giovani Samaha | 3-6,0-6 |
| ITF M15 Kampala | 2019/05/21 06:00 | Kento Tagashira v Muthu A Senthilkumar | 6-4,7-6 |
| ITF M15 Kampala | 2019/05/20 14:55 | Kento Tagashira v Frank Nyago | 6-0,6-0 |
| ITF M15 Kampala | 2019/05/15 11:45 | Julius Tverijonas v Kento Tagashira | 6-7,7-6,6-2 |
| ITF M15 Kampala | 2019/05/14 08:35 | Kento Tagashira v Anshumat Srivastava | 6-3,6-0 |
| Full List | 2019/05/06 08:00 | Kento Tagashira v Sergey Bolotov | 2-6,3-6 |
| ITF M15 Guam | 2019/06/05 00:00 | Kyler Jirasook v Gengo Kikuchi | 2-6,2-6 |
| ITF M15 Karuizawa | 2019/05/31 02:40 | Gengo Kikuchi v Sora Fukuda | 6-4,4-6,0-6 |
| ITF M15 Karuizawa | 2019/05/30 06:15 | Gengo Kikuchi v Ren Nakamura | 6-2,6-2 |
| ITF M15 Karuizawa | 2019/05/29 02:30 | Gengo Kikuchi v Taketo Takamisawa | 6-0,6-1 |
| ITF M25 Matsuyama | 2019/04/09 05:05 | Masamichi Imamura v Gengo Kikuchi | 7-6,6-1 |
| ITF M15 Kashiwa | 2019/04/03 02:20 | Gengo Kikuchi v Shintaro Imai | 3-6,1-6 |
| ITF M15 Kashiwa | 2019/04/01 03:00 | Kaito Uesugi v Gengo Kikuchi | 2-6,3-6 |
| ITF M15 Kashiwa | 2019/04/01 00:00 | Yuichiro Inui v Gengo Kikuchi | 4-6,2-6 |