Stadium: Court 4 Round: 54 Ground: Hardcourt outdoor
| ITF M25 - Taipei | 2019/07/22 02:00 | Taisei Ichikawa v Jeffrey Hsu | 6-2,2-6,12-10 |
| ITF M25 - Taipei | 2019/07/19 02:00 | Taisei Ichikawa v Rio Noguchi | 2-6,6-7 |
| ITF M25 - Taipei | 2019/07/18 02:00 | Makoto Ochi v Taisei Ichikawa | 1-6,2-6 |
| ITF M25 - Taipei | 2019/07/16 03:20 | Taisei Ichikawa v Arturs Lazdins | 6-1,6-2 |
| ITF M25 - Taipei | 2019/07/15 02:00 | Taisei Ichikawa v Ying-Ze Chen | 6-1,6-1 |
| ITF M15 - Gimcheon | 2019/06/21 01:00 | Seong Chan Hong v Taisei Ichikawa | 6-1,6-3 |
| ITF M15 - Gimcheon | 2019/06/20 01:00 | Ju-Hae Moon v Taisei Ichikawa | 2-6,3-6 |
| ITF M15 - Gimcheon | 2019/06/18 04:25 | Taisei Ichikawa v Thomas Fancutt | 3-6,6-3,6-2 |
| 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 |
| ITF M15 - Gimcheon | 2019/06/10 02:00 | Seita Watanabe v Jin Sung Han | 6-1,6-2 |
| ITF M15 - Daegu | 2019/06/06 02:00 | Jung-Woong Na v Seita Watanabe | 6-3,6-2 |