Stadium: Centre Court Round: 26 Ground: Hardcourt outdoor
| Challenger Busan | 2017/05/16 03:35 | Thomas Fabbiano v Tatsuma Ito | 4-6,2-6 |
| Challenger Seoul | 2017/05/10 01:30 | Tatsuma Ito v Marko Tepavac | 2-6,3-6 |
| Challenger Gimcheon | 2017/05/02 05:55 | Tatsuma Ito v Duckhee Lee | 6-4,3-6,4-6 |
| Challenger Taipei | 2017/04/23 07:55 | Tatsuma Ito v Yen-Hsun Lu | 1-6,6-7 |
| Challenger Taipei | 2017/04/22 05:00 | Akira Santillan v Tatsuma Ito | 4-6,6-2,5-7 |
| Challenger Taipei | 2017/04/21 06:00 | Konstantin Kravchuk v Tatsuma Ito | 4-6,6-7 |
| Challenger Taipei | 2017/04/20 06:00 | Tatsuma Ito v Lukas Lacko | 6-4,6-4 |
| ITF Japan F5 | 2017/04/09 07:30 | Tatsuma Ito v Masato Shiga | 6-4,6-2 |
| Challenger Busan | 2017/05/16 05:25 | Yuya Kibi v Hong Chung | 1-6,6-4,4-6 |
| Challenger Seoul | 2017/05/08 07:00 | Hong Chung v Dudi Sela | 5-7,3-6 |
| Challenger Gimcheon Qual | 2017/04/30 01:00 | Hong Chung v Liam Broady | 5-7,3-6 |
| Challenger Gimcheon Qual | 2017/04/29 02:20 | Sidharth Rawat v Hong Chung | 6-7,3-6 |
| ITF Japan F3 | 2017/03/22 07:00 | Hong Chung v Takuto Niki | 3-6,5-7 |
| ITF Japan F3 | 2017/03/22 02:05 | Hong Chung v Rimpei Kawakami | 6-2,3-6,6-2 |
| ITF Japan F2 | 2017/03/15 02:00 | Zhe Li v Hong Chung | 6-1,6-7,6-3 |
| ITF Japan F2 | 2017/03/14 05:30 | Zhaoyi Cao v Hong Chung | 6-7,6-7 |