Stadium: Court 4 Round: 28 Ground: Hardcourt outdoor
| Challenger - Shenzhen - Kwal. | 2017/03/12 09:00 | Kuan-Yi Lee v Shuichi Sekiguchi | 6-3,6-4 |
| ITF M15 Wuhan | 2019/05/02 04:50 | Shuichi Sekiguchi v Alexander Crnokrak | 7-5,6-2 |
| ITF M15 Wuhan | 2019/05/01 05:50 | Shuichi Sekiguchi v Chenhe Li | 6-4,6-3 |
| ITF M25 Matsuyama | 2019/04/14 04:15 | Takuto Niki v Shuichi Sekiguchi | 4-6,4-6 |
| ITF M25 Matsuyama | 2019/04/13 01:00 | Seong Chan Hong v Shuichi Sekiguchi | 2-6,3-6 |
| ITF M25 Matsuyama | 2019/04/12 05:20 | Naoki Tajima v Shuichi Sekiguchi | 4-6,4-6 |
| ITF M25 Matsuyama | 2019/04/12 02:25 | Issei Okamura v Shuichi Sekiguchi | 1-6,0-6 |
| ITF M25 Matsuyama | 2019/04/09 04:10 | Ryota Tanuma v Shuichi Sekiguchi | 4-6,4-6 |
| ITF M15 - Kashiwa | 2019/04/03 05:20 | Takuto Niki v Shuichi Sekiguchi | 2-6,6-3,7-6 |
| ITF M15 Wuhan | 2019/05/03 02:00 | Kuan-Yi Lee v Sora Fukuda | 6-0,6-3 |
| ITF M15 Wuhan | 2019/05/02 03:25 | Kuan-Yi Lee v Seon Yong Han | 6-2,6-2 |
| ITF M15 Wuhan | 2019/05/01 07:15 | Kuan-Yi Lee v Kousuke Ogura | 6-3,6-2 |
| Challenger Taipei | 2019/04/10 05:10 | Kuan-Yi Lee v Tatsuma Ito | 3-6,3-6 |
| Challenger Taipei | 2019/04/09 03:25 | Kuan-Yi Lee v Ray Ho | 6-4,6-2 |
| ITF M15 - Kashiwa | 2019/04/04 01:00 | Yuki Mochizuki v Kuan-Yi Lee | 2-6,6-3,6-4 |
| ITF M15 - Kashiwa | 2019/04/03 05:15 | Kuan-Yi Lee v Yuta Shimizu | 6-4,6-7,6-4 |
| ITF M15 - Kashiwa | 2019/04/01 06:00 | Kuan-Yi Lee v Kazuki Nishiwaki | 6-4,6-4 |