Stadium: Court F Round: 25 Ground: Hardcourt indoor
| Liuzhou, Chine | 2018/10/24 06:00 | Radu Albot v Duckhee Lee | 6-2,7-5 |
| Liuzhou, Chine | 2018/10/22 04:15 | Duckhee Lee v Yang, Tsung-Hua | 6-2,6-3 |
| Challenger Tashkent | 2018/10/08 14:10 | Evgeny Karlovskiy v Duckhee Lee | 7-6,6-4 |
| Challenger Kaohsiung | 2018/09/22 08:10 | Gaël Monfils v Duckhee Lee | 6-1,6-1 |
| Challenger Kaohsiung | 2018/09/21 12:05 | Duckhee Lee v Frederico Ferreira Silva | 6-2,7-5 |
| Challenger Kaohsiung | 2018/09/20 10:00 | Jason Jung v Duckhee Lee | 6-7,4-6 |
| Challenger Kaohsiung | 2018/09/19 08:50 | Brkic, Tomislav v Duckhee Lee | 2-6,6-7 |
| Coupe Davis | 2018/09/15 03:35 | Duckhee Lee v Rubin Statham | 6-4,6-1 |
| Shenzhen II, Chine | 2018/10/28 02:30 | Shyla, Yaraslau v Nam, Ji Sung | 7-6,2-6,6-3 |
| Shenzhen II, Chine | 2018/10/27 02:00 | Li, Yuanfeng v Nam, Ji Sung | 4-6,1-6 |
| Liuzhou, Chine | 2018/10/20 04:30 | He, Yecong v Nam, Ji Sung | 2-6,6-3,6-2 |
| ITF Korea F5 | 2018/08/26 03:00 | Nam, Ji Sung v Makoto Ochi | 6-4,6-1 |
| ITF Korea F5 | 2018/08/25 01:00 | Kim, Cheong-Eui v Nam, Ji Sung | 2-6,3-6 |
| ITF Korea F5 | 2018/08/24 01:15 | Nam, Ji Sung v Son, Ji Hoon | 6-4,6-2 |
| ITF Korea F5 | 2018/08/23 04:45 | Nam, Ji Sung v Bourchier, Edward | 6-2,6-2 |
| ITF Korea F5 | 2018/08/21 01:00 | Nam, Ji Sung v Han, Seong Jae | 6-1,6-0 |