Stadium: Court 1 Round: 27
| ITF Korea F6 | 2018/08/30 05:50 | Lucas Catarina v Dylan Seong Kwan Kim | 6-2,6-4 |
| ITF Korea F6 | 2018/08/29 04:40 | Lucas Catarina v Daniel Yoo | 6-2,7-6 |
| ITF Korea F5 | 2018/08/22 03:00 | Chan-Yeong Oh v Lucas Catarina | 4-6,6-2,6-1 |
| ITF Korea F5 | 2018/08/21 03:00 | Jung Hoon Kim v Lucas Catarina | 0-6,2-6 |
| Challenger Gwangju | 2018/08/13 08:40 | Lucas Catarina v Makoto Ochi | 3-6,2-6 |
| Challenger Lexington | 2018/07/31 01:45 | Tom Jomby v Lucas Catarina | 6-2,7-6 |
| Challenger Binghamton | 2018/07/26 23:00 | Lucas Catarina v Marcel Granollers | 2-6,4-6 |
| Challenger Binghamton | 2018/07/26 15:45 | William Blumberg v Lucas Catarina | 4-6,6-2,4-6 |
| ITF Korea F6 | 2018/08/30 04:50 | Chan-Yeong Oh v Yeongseok Jeong | 6-2,4-6,2-6 |
| ITF Korea F6 | 2018/08/28 02:00 | Yeongseok Jeong v Young-Hoon Jeong | 7-5,7-6 |
| ITF Korea F5 | 2018/08/21 03:00 | Hong Chung v Yeongseok Jeong | 6-1,7-6 |
| Challenger Gwangju | 2018/08/13 06:30 | Yeongseok Jeong v Rubin Statham | 4-6,0-6 |
| ITF Korea F3 | 2018/06/19 08:30 | Yeongseok Jeong v Sanhui Shin | 6-4,5-7,2-6 |
| Challenger Gimcheon Qual | 2018/05/05 04:40 | Yeongseok Jeong v Tung-Lin Wu | 1-6,2-6 |
| ITF Indonesia F8 Qual | 2017/11/25 05:00 | Ken Onoda v Yeongseok Jeong | 2-6,6-1,6-2 |
| ITF Korea F2 Qual | 2017/06/04 04:30 | Dong-Kyu Lee v Yeongseok Jeong | 6-4,6-1 |