Stadium: Court 6 Round: 25 Ground: Hardcourt outdoor
| ITF Thailand F2 | 2018/08/27 07:10 | Ryota Tanuma v Soichiro Moritani | 6-2,7-6 |
| ITF M25 Nonthaburi | 2019/07/23 06:05 | Harry Bourchier v Ryota Tanuma | 4-6,6-3,7-5 |
| ITF M25 Taipei | 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 Gimcheon | 2019/06/20 01:00 | Ryota Tanuma v Yong-Kyu Lim | 3-6,7-6,6-4 |
| ITF M15 Gimcheon | 2019/06/18 03:00 | Ryota Tanuma v Jaewoo Kim | 6-1,6-3 |
| ITF M25 Nonthaburi | 2019/07/25 07:15 | Soichiro Moritani v Alexander Crnokrak | 3-6,2-6 |
| ITF M25 Nonthaburi | 2019/07/23 05:45 | Credit Chaiyarin v Soichiro Moritani | 2-6,3-6 |
| ITF M25 Kunshan | 2019/07/04 01:30 | Soichiro Moritani v Fajing Sun | 1-6,0-6 |
| ITF M25 Kunshan | 2019/07/03 01:30 | Sheng Hao Zhou v Soichiro Moritani | 3-6,4-6 |
| ITF M15 Akishima | 2019/06/12 01:00 | Soichiro Moritani v Haru Inoue | 0-6,2-6 |
| ITF M15 Guam | 2019/06/07 00:00 | Soichiro Moritani v Ko Suzuki | 3-6,4-6 |
| ITF M15 Guam | 2019/06/06 00:00 | Soichiro Moritani v Sam Ryan Ziegann | 6-2,6-2 |
| ITF M15 Guam | 2019/06/05 01:10 | Soichiro Moritani v Camden Camacho | 6-0,6-0 |