Round: 44 Ground: Hardcourt outdoor
| Challenger Busan Qual | 2018/05/13 02:00 | Rubin Statham v Tae-Woo Lee | 7-6,6-3 |
| Challenger Busan Qual | 2018/05/12 01:00 | Dong Ju Kim v Tae-Woo Lee | 4-6,4-6 |
| Challenger Gimcheon Qual | 2018/05/05 02:50 | Tae-Woo Lee v Makoto Ochi | 4-6,1-6 |
| Challenger Seoul Qual | 2018/04/28 03:05 | Jung-Woong Na v Tae-Woo Lee | 6-1,6-3 |
| ITF Japan F4 | 2018/03/24 00:00 | Tae-Woo Lee v Tamaki Yamao | 1-6,4-6 |
| ITF Japan F3 | 2018/03/19 02:40 | Tae-Woo Lee v Kaito Uesugi | 3-6,3-6 |
| ITF Japan F2 | 2018/03/12 02:30 | Tung-Lin Wu v Tae-Woo Lee | 6-1,6-1 |
| ITF Turkey F6 | 2018/02/15 09:10 | Jordi Samper-Montana v Tae-Woo Lee | 6-1,6-0 |
| ITF Korea F1 | 2018/06/02 01:00 | Jeong Heon Lee v Seong Woon Yu | 6-1,3-6,2-6 |
| ITF Korea F8 | 2016/08/21 02:00 | Woo-Ram Kim v Seong Woon Yu | 6-0,6-2 |
| ITF Korea F8 | 2016/08/20 03:30 | Sung Jun Park v Seong Woon Yu | 6-4,2-6,3-6 |
| ITF Korea F1 Qual | 2016/06/12 03:00 | Dong-Hak Sin v Seong Woon Yu | 6-3,6-2 |