Estádio: Court 1 Round: 25
| ITF - Coreia do Sul F5 | 2018/08/22 03:00 | Chan-Yeong Oh v Lucas Catarina | 4-6,6-2,6-1 |
| ITF - Coreia do Sul 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 |
| Challenger - Gatineau - Qualificação | 2018/07/15 20:00 | Lucas Catarina v Justin Boulais | 6-0,5-7,6-7 |
| Challenger - Gatineau - Qualificação | 2018/07/15 02:00 | Lucas Catarina v Kento Takeuchi | 6-3,6-3 |
| ITF - Coreia F4 | 2018/08/13 01:00 | Uisung Park v Daniel Yoo | 6-2,1-6,7-6 |
| ITF - Coreia F4 | 2018/08/12 02:00 | Daniel Yoo v Min Hyun Lee | 6-0,6-0 |
| ITF - Coreia F4 | 2018/08/11 01:00 | Yu-Seob Kim v Daniel Yoo | 1-6,0-6 |
| ITF - Coreia F2 | 2018/06/11 03:30 | Daniel Yoo v Yu-Seob Kim | 7-5,6-4 |
| ITF - Coreia F2 | 2018/06/10 05:00 | Daniel Yoo v Jose Daniel Bendeck | 6-2,6-2 |
| ITF - Coreia F1 | 2018/06/06 02:15 | Ji Sung Nam v Daniel Yoo | 6-4,6-3 |
| Challenger - Busan - Qualificação | 2018/05/12 01:00 | Luke Saville v Daniel Yoo | 6-1,6-0 |
| Challenger - Gimcheon - Qualificação | 2018/05/05 01:30 | Daniel Yoo v Ben Patael | 3-6,2-6 |