Estádio: Court 6 Round: 25 Ground: Hardcourt outdoor
| ITF - M25 Nonthaburi | 2019/08/01 05:25 | Ryota Tanuma v Sergey Fomin | 1-6,4-6 |
| ITF - M25 Nonthaburi | 2019/07/30 06:25 | Ryota Tanuma v Soichiro Moritani | 6-2,2-6,6-3 |
| ITF - M25 Nonthaburi | 2019/07/23 06:05 | Harry Bourchier v Ryota Tanuma | 4-6,6-3,7-5 |
| ITF - M25 Taipé | 2019/07/16 06:25 | Tsung-Hao Huang v Ryota Tanuma | 6-4,6-2 |
| ITF - M15 Anseong | 2019/06/27 02:55 | Haru Inoue v Ryota Tanuma | 6-2,6-2 |
| ITF - M15 Anseong | 2019/06/26 02:45 | Shinnosuke Hiramatsu v Ryota Tanuma | 5-7,6-4,4-6 |
| ITF - M15 Gimcheon | 2019/06/22 02:25 | Seong Chan Hong v Ryota Tanuma | 6-3,6-0 |
| ITF - M15 Gimcheon | 2019/06/21 01:00 | Ryota Tanuma v Cheong-Eui Kim | 6-2,6-7,7-5 |
| ITF - M15 Hua Hin | 2019/08/27 07:35 | Young-Hoon Jeong v Yeongseok Jeong | 6-4,6-2 |
| ITF - M15 Hua Hin | 2019/08/27 04:00 | Ko Suzuki v Young-Hoon Jeong | 4-6,6-2,3-10 |
| ITF - M15 Hua Hin | 2019/08/23 06:20 | Ryan Peniston v Young-Hoon Jeong | 6-4,7-5 |
| ITF - M15 Hua Hin | 2019/08/22 03:00 | Young-Hoon Jeong v Wishaya Trongcharoenchaikul | 7-6,6-3 |
| ITF - M15 Hua Hin | 2019/08/21 04:25 | Yuttana Charoenphon v Young-Hoon Jeong | 1-6,7-6,1-6 |
| ITF - M15 Hua Hin | 2019/08/20 04:50 | Young-Hoon Jeong v Jirat Navasirisomboon | 7-6,0-6,10-7 |
| ITF - M15 Hua Hin | 2019/08/19 03:00 | Nitin Kumar Sinha v Young-Hoon Jeong | 2-6,4-6 |
| ITF - M15 Anseong | 2019/06/27 03:20 | Jean Thirouin v Young-Hoon Jeong | 7-6,7-5 |