Stadium: Court 4 Round: 27 Ground: Hardcourt outdoor
| ITF M15 Nishitōkyō | 2019/03/12 05:00 | Makoto Ochi v Seita Watanabe | 6-1,6-2 |
| ITF M25 Taipei | 2019/07/25 02:00 | Makoto Ochi v Kento Takeuchi | 6-4,7-6 |
| ITF M25 Taipei | 2019/07/24 02:00 | Makoto Ochi v Yu Hsiou Hsu | 6-2,6-4 |
| ITF M25 Taipei | 2019/07/18 02:00 | Makoto Ochi v Taisei Ichikawa | 1-6,2-6 |
| ITF M25 Taipei | 2019/07/17 02:00 | Makoto Ochi v Jie-Ming Pai | 7-5,6-4 |
| ITF M25 Qujing | 2019/07/11 03:50 | Jumpei Yamasaki v Makoto Ochi | 2-6,6-3,7-6 |
| ITF M25 Qujing | 2019/07/09 05:15 | Cing-Yang Meng v Makoto Ochi | 0-6,4-6 |
| ITF M15 Anseong | 2019/06/25 04:10 | Makoto Ochi v Jean Thirouin | 4-6,7-6,3-6 |
| Challenger Fergana | 2019/06/17 07:25 | Shuichi Sekiguchi v Makoto Ochi | 6-4,6-4 |
| ITF M25 Taipei | 2019/07/24 02:00 | Seita Watanabe v Chien Hsun Lo | 6-2,6-2 |
| ITF M25 Taipei | 2019/07/23 02:00 | Taisei Ichikawa v Seita Watanabe | 5-7,4-6 |
| ITF M25 Taipei | 2019/07/17 02:00 | Yan Bai v Seita Watanabe | 6-0,6-2 |
| ITF M25 Taipei | 2019/07/16 03:50 | Ren Nakamura v Seita Watanabe | 6-4,4-6,5-10 |
| ITF M25 Taipei | 2019/07/15 04:30 | Mu Fu Tsai v Seita Watanabe | 0-6,0-6 |
| ITF M15 Gimcheon | 2019/06/18 03:20 | Seita Watanabe v Seong Taek Im | 3-6,7-6,12-14 |
| ITF M15 Gimcheon | 2019/06/12 03:20 | Seong-Gook Oh v Seita Watanabe | 6-7,6-2,6-3 |
| ITF M15 Gimcheon | 2019/06/11 02:50 | Seita Watanabe v Hyung-Chan Lim | 6-4,6-0 |