Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| Challenger Gwangju | 2017/09/19 01:30 | Shuichi Sekiguchi v Tsung-Hua Yang | 5-7,6-7 |
| ITF China F5 | 2017/04/13 05:05 | Tsung-Hua Yang v Shuichi Sekiguchi | 2-6,4-6 |
| Challenger Chengdu | 2019/07/29 10:30 | Weiqiang Zheng v Shuichi Sekiguchi | 5-7,1-6 |
| Challenger Nur-Sultan | 2019/07/18 05:00 | Egor Gerasimov v Shuichi Sekiguchi | 6-2,6-0 |
| Challenger Nur-Sultan | 2019/07/16 05:00 | Shuichi Sekiguchi v Zhizhen Zhang | 7-5,6-4 |
| Challenger Nur-Sultan | 2019/07/15 06:45 | Shuichi Sekiguchi v Dostanbek Tashbulatov | 6-3,6-1 |
| Challenger Fergana | 2019/06/17 07:25 | Shuichi Sekiguchi v Makoto Ochi | 6-4,6-4 |
| ITF M25 Hong Kong | 2019/06/09 04:00 | Shintaro Imai v Shuichi Sekiguchi | 6-2,6-1 |
| ITF M25 Hong Kong | 2019/06/08 03:00 | Yuki Mochizuki v Shuichi Sekiguchi | 3-6,6-7 |
| ITF M25 Hong Kong | 2019/06/07 02:00 | Shuichi Sekiguchi v Yusuke Takahashi | 6-3,6-3 |
| ITF M25 Taipei | 2019/07/28 02:00 | Tsung-Hua Yang v Renta Tokuda | 2-6,6-3,0-6 |
| ITF M25 Taipei | 2019/07/27 02:00 | Tsung-Hua Yang v Makoto Ochi | 6-2,7-5 |
| ITF M25 Taipei | 2019/07/26 02:00 | Tsung-Hua Yang v Ti Chen | 6-3,6-4 |
| ITF M25 Taipei | 2019/07/25 04:05 | Tsung-Hua Yang v Arturs Lazdins | 7-6,6-3 |
| ITF M25 Taipei | 2019/07/24 04:00 | Tsung-Hua Yang v Sam Taylor | 6-2,6-2 |
| Challenger Nur-Sultan | 2019/07/17 08:00 | Aleksandar Vukic v Tsung-Hua Yang | 6-3,2-6,6-4 |
| Challenger Nur-Sultan | 2019/07/16 06:55 | Tsung-Hua Yang v Arjun Kadhe | 6-2,3-6,7-5 |
| ITF M25 Qujing | 2019/07/13 02:30 | Tsung-Hua Yang v Fajing Sun | 6-7,6-7 |