Stadium: Centre Court Round: 29 Ground: Hardcourt outdoor
| ITF - M15 Nishi-Tokyo | 2019/03/15 01:00 | Sekiguchi, Shuichi v Shintaro Imai | 6-3,6-0 |
| ITF Hong Kong F5 | 2016/12/29 23:00 | Sekiguchi, Shuichi v Shintaro Imai | 7-6,6-3 |
| Hong Kong, Simples M-ITF-HKG-04A | 2019/06/08 03:00 | Yan Bai v Shintaro Imai | 6-7,3-6 |
| Hong Kong, Simples M-ITF-HKG-04A | 2019/06/07 02:00 | Shintaro Imai v Yuta Shimizu | 5-7,7-5,6-3 |
| Hong Kong, Simples M-ITF-HKG-04A | 2019/06/06 02:00 | Yu Hsiou Hsu v Shintaro Imai | 2-6,3-6 |
| Hong Kong, Simples M-ITF-HKG-04A | 2019/06/04 05:45 | Coleman Wong v Shintaro Imai | 1-6,1-6 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/05/25 03:00 | Nam, Ji Sung v Shintaro Imai | 6-4,7-5 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/05/24 06:30 | Shintaro Imai v Kovapitukted, Palaphoom | 6-0,6-1 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/05/23 03:00 | Shintaro Imai v Yu Hsiou Hsu | 6-4,7-6 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/05/21 07:05 | Blake Ellis v Shintaro Imai | 7-6,3-6,2-6 |
| Hong Kong, Simples M-ITF-HKG-04A | 2019/06/08 03:00 | Yuki Mochizuki v Sekiguchi, Shuichi | 3-6,6-7 |
| Hong Kong, Simples M-ITF-HKG-04A | 2019/06/07 02:00 | Sekiguchi, Shuichi v Yusuke Takahashi | 6-3,6-3 |
| Hong Kong, Simples M-ITF-HKG-04A | 2019/06/06 02:00 | Sekiguchi, Shuichi v Gao, Xin | 6-3,6-1 |
| Hong Kong, Simples M-ITF-HKG-04A | 2019/06/04 05:25 | Sekiguchi, Shuichi v Kai, Wai Yu | 6-2,6-1 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/05/31 04:40 | Rio Noguchi v Sekiguchi, Shuichi | 7-5,5-7,6-1 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/05/30 10:10 | Kaewsuto, Chayanon v Sekiguchi, Shuichi | 2-6,7-5,4-6 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/05/29 06:35 | Adil Kalyanpur v Sekiguchi, Shuichi | 6-7,4-6 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/05/26 03:00 | Nam, Ji Sung v Sekiguchi, Shuichi | 1-6,4-6 |