Estádio: Court 2 Round: 54
| Challenger - Seul - Qualificação | 2018/04/30 03:00 | Yosuke Watanuki v Ji Sung Nam | 7-5,6-2 |
| Challenger - Seul - Qualificação | 2018/04/29 03:35 | Ji Sung Nam v Blake Ellis | 6-3,6-3 |
| Challenger - Seul - Qualificação | 2018/04/28 01:30 | Daniel Yoo v Ji Sung Nam | 2-6,2-6 |
| ITF - Turquia F5 | 2018/02/06 08:30 | Ji Hoon Son v Ji Sung Nam | 4-6,7-6,6-1 |
| ITF - Turquia F5 | 2018/02/05 07:30 | Ji Sung Nam v Yuichiro Inui | 7-5,6-0 |
| ITF - Turquia F5 | 2018/02/04 07:30 | Ji Sung Nam v Ki Su Jung | 7-6,6-3 |
| ITF - Turquia F4 | 2018/01/29 08:00 | Ji Sung Nam v Dan Dowson | 7-5,6-7,4-6 |
| ITF - Turquia F4 | 2018/01/28 07:30 | Ji Sung Nam v Sorin Andrei Iordache | 6-2,6-4 |
| ITF - Vietname F1 | 2018/04/28 05:00 | Stefan Skadarka v Phongsapak Kerdlaphee | 2-6,6-2,6-3 |
| ITF - Turquia F15 | 2018/04/14 09:30 | Karlo Kranic v Phongsapak Kerdlaphee | 1-6,6-1,6-2 |
| ITF - Turquia F14 | 2018/04/07 09:30 | Christian Oliveira v Phongsapak Kerdlaphee | 6-0,6-1 |
| ITF - Turquia F13 | 2018/03/31 08:30 | Ken Onishi v Phongsapak Kerdlaphee | 6-4,6-2 |
| ITF - Egipto F9 | 2018/03/11 08:00 | Phongsapak Kerdlaphee v Siphosothando Montsi | 2-6,4-6 |
| ITF - Egipto F8 | 2018/03/03 12:30 | Phongsapak Kerdlaphee v Stephan Gerritsen | 1-6,4-6 |
| ITF - Egipto F7 | 2018/02/24 08:00 | Wilfredo Gonzalez v Phongsapak Kerdlaphee | 6-2,6-3 |
| ITF - Egipto F6 | 2018/02/17 08:00 | Phongsapak Kerdlaphee v Marko Vejnovic | 1-6,5-7 |