Stadium: Court 13 Round: 28 Ground: Hardcourt outdoor
| ITF M15 Nishi-Tokyo | 2019/03/14 03:45 | Shuichi Sekiguchi v Yuki Mochizuki | 6-2,6-1 |
| ITF Japan F6 | 2017/05/29 05:55 | Yuki Mochizuki v Shuichi Sekiguchi | 3-6,4-6 |
| ITF M25 Hong Kong | 2019/06/07 02:00 | Chun Hsin Tseng v Yuki Mochizuki | 4-6,3-6 |
| ITF M25 Hong Kong | 2019/06/05 02:00 | Luca Castelnuovo v Yuki Mochizuki | 2-6,2-6 |
| ITF M15 Karuizawa | 2019/06/02 02:00 | Ko Suzuki v Yuki Mochizuki | 4-6,6-4,2-6 |
| ITF M15 Karuizawa | 2019/06/01 02:00 | Sora Fukuda v Yuki Mochizuki | 7-5,3-6,4-6 |
| ITF M15 Karuizawa | 2019/05/31 02:30 | Haru Inoue v Yuki Mochizuki | 2-6,3-6 |
| ITF M15 Karuizawa | 2019/05/30 04:15 | Shunrou Takeshima v Yuki Mochizuki | 1-6,6-7 |
| ITF M15 Karuizawa | 2019/05/29 04:00 | Yuta Kawahashi v Yuki Mochizuki | 1-6,2-6 |
| ITF M25 Wuhan | 2019/05/08 05:15 | Yuki Mochizuki v Tyler Lu | 2-6,6-3,6-7 |
| ITF M25 Hong Kong | 2019/06/07 02:00 | Shuichi Sekiguchi v Yusuke Takahashi | 6-3,6-3 |
| ITF M25 Hong Kong | 2019/06/06 02:00 | Shuichi Sekiguchi v Xin Gao | 6-3,6-1 |
| ITF M25 Hong Kong | 2019/06/04 05:25 | Shuichi Sekiguchi v Wai Yu Kai | 6-2,6-1 |
| ITF M25 Nonthaburi | 2019/05/31 04:40 | Rio Noguchi v Shuichi Sekiguchi | 7-5,5-7,6-1 |
| ITF M25 Nonthaburi | 2019/05/30 10:10 | Chayanon Kaewsuto v Shuichi Sekiguchi | 2-6,7-5,4-6 |
| ITF M25 Nonthaburi | 2019/05/29 06:35 | Adil Kalyanpur v Shuichi Sekiguchi | 6-7,4-6 |
| ITF M25 Nonthaburi | 2019/05/26 03:00 | Ji Sung Nam v Shuichi Sekiguchi | 1-6,4-6 |
| ITF M25 Nonthaburi | 2019/05/25 05:15 | Harry Bourchier v Shuichi Sekiguchi | 4-6,4-6 |