Stadium: Centre Court Round: 25
| Challenger Shenzhen | 2017/03/14 06:00 | Duckhee Lee v Tatsuma Ito | 6-1,5-7,6-4 |
| Challenger Kaohsiung | 2015/09/21 07:40 | Tatsuma Ito v Duckhee Lee | 4-6,7-6,6-3 |
| ITF Japan F5 | 2017/04/09 07:30 | Tatsuma Ito v Masato Shiga | 6-4,6-2 |
| ITF Japan F5 | 2017/04/09 03:30 | Tatsuma Ito v Yusuke Takahashi | 6-4,6-2 |
| ITF Japan F5 | 2017/04/07 06:10 | Tatsuma Ito v Tung-Lin Wu | 6-4,6-4 |
| ITF Japan F5 | 2017/04/06 03:10 | Tatsuma Ito v Ryota Tanuma | 6-2,6-4 |
| ITF Japan F5 | 2017/04/04 04:40 | Tatsuma Ito v Katsuki Nagao | 7-6,6-4 |
| Challenger Quanzhou | 2017/03/21 04:50 | Yuki Bhambri v Tatsuma Ito | 7-6,6-2 |
| Challenger Shenzhen | 2017/03/14 06:00 | Duckhee Lee v Tatsuma Ito | 6-1,5-7,6-4 |
| Challenger Yokohama | 2017/03/04 05:50 | Tatsuma Ito v Soonwoo Kwon | 4-6,4-6 |
| Challenger Taipei | 2017/04/17 11:20 | Ramkumar Ramanathan v Duckhee Lee | 2-6,6-2,6-4 |
| ATP Marrakech Qual | 2017/04/09 13:40 | Gianluigi Quinzi v Duckhee Lee | 6-2,6-3 |
| ATP Marrakech Qual | 2017/04/08 14:00 | Alexander Zhurbin v Duckhee Lee | 3-6,1-6 |
| Challenger Sophia Antipolis | 2017/04/05 11:40 | Duckhee Lee v Jozef Kovalik | 7-5,4-6,4-6 |
| Challenger Quanzhou | 2017/03/23 07:15 | Matteo Berrettini v Duckhee Lee | 6-4,6-7,6-1 |
| Challenger Quanzhou | 2017/03/23 01:30 | Di Wu v Duckhee Lee | 6-7,7-6,2-6 |
| Challenger Quanzhou | 2017/03/20 05:40 | Rigele Te v Duckhee Lee | 4-6,6-7 |
| Challenger Shenzhen | 2017/03/17 05:35 | Duckhee Lee v Luca Vanni | 1-6,3-6 |