Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| Challenger Kaohsiung | 2015/09/21 07:40 | Tatsuma Ito v Duckhee Lee | 4-6,7-6,6-3 |
| Challenger Zhuhai | 2017/03/06 07:40 | Duckhee Lee v Stefano Napolitano | 4-6,6-7 |
| Challenger Yokohama | 2017/02/28 02:50 | Duckhee Lee v Marko Tepavac | 5-7,7-6,1-6 |
| Challenger Cherbourg | 2017/02/15 19:15 | Mathias Bourgue v Duckhee Lee | 6-4,6-4 |
| Challenger Cherbourg | 2017/02/14 14:55 | Alexandre Sidorenko v Duckhee Lee | 1-6,4-6 |
| Challenger Budapest | 2017/02/08 09:30 | Casper Ruud v Duckhee Lee | 7-5,6-2 |
| Davis Cup | 2017/02/03 05:40 | Duckhee Lee v Denis Istomin | 6-4,2-6,6-7,4-6 |
| Challenger Rennes | 2017/01/27 15:35 | Andrey Rublev v Duckhee Lee | 6-4,3-6,6-4 |
| Challenger Rennes | 2017/01/26 12:40 | Duckhee Lee v Lukas Rosol | 6-3,4-6,6-3 |
| Challenger Yokohama | 2017/03/04 05:50 | Tatsuma Ito v Soonwoo Kwon | 4-6,4-6 |
| Challenger Yokohama | 2017/03/03 05:00 | Kaito Uesugi v Tatsuma Ito | 7-6,2-6,6-7 |
| Challenger Yokohama | 2017/03/03 01:00 | Tatsuma Ito v Go Soeda | 6-4,6-1 |
| Challenger Yokohama | 2017/02/28 03:35 | Joris De Loore v Tatsuma Ito | 6-7,1-6 |
| Challenger Kyoto | 2017/02/21 01:30 | Tatsuma Ito v Shuichi Sekiguchi | 6-2,6-3 |
| ATP Memphis Qual | 2017/02/12 00:30 | James McGee v Tatsuma Ito | 6-4,6-7,1-6 |
| Challenger San Francisco | 2017/02/10 22:00 | Tatsuma Ito v Ze Zhang | 2-6,3-6 |
| Challenger San Francisco | 2017/02/09 23:30 | Peter Polansky v Tatsuma Ito | 6-7,6-3,4-6 |