Stadium: Court 1 Round: 26
| ITF Korea F2 | 2018/06/13 03:05 | Moritani, Soichiro v Vigani, Joy | 6-1,6-2 |
| ITF Singapore F2 | 2018/05/21 02:00 | Moritani, Soichiro v Thai-Son Kwiatkowski | 3-6,2-6 |
| ITF Singapore F1 | 2018/05/19 03:00 | Moritani, Soichiro v Thai-Son Kwiatkowski | 2-6,2-6 |
| ITF Singapore F1 | 2018/05/18 03:30 | Hu, Nicholas S v Moritani, Soichiro | 3-6,1-6 |
| ITF Singapore F1 | 2018/05/16 04:20 | Moritani, Soichiro v Vuradin, Lucas | 6-1,1-6,7-6 |
| ITF Singapore F1 | 2018/05/15 02:00 | Moritani, Soichiro v Adamson, Alec | 6-3,1-6,6-1 |
| ITF Vietnam F2 | 2018/05/07 03:00 | Saito, Takashi v Moritani, Soichiro | 7-6,3-6,6-3 |
| ITF Vietnam F1 | 2018/04/30 03:00 | Moritani, Soichiro v Navasirisomboon, Jirat | 2-6,4-6 |
| ITF Korea F2 | 2018/06/12 01:00 | Larriere, Clement v Yunseong Chung | 3-6,4-6 |
| ITF China F7 | 2018/06/01 06:15 | Gao, Xin v Yunseong Chung | 6-0,6-7,6-3 |
| ITF China F7 | 2018/05/31 04:30 | Lo, Chien Hsun v Yunseong Chung | 2-6,7-5,5-7 |
| ITF China F7 | 2018/05/29 05:30 | Zhenxiong Dong v Yunseong Chung | 2-6,1-6 |
| Challenger - Busan | 2018/05/15 03:25 | Ebden, Matthew v Yunseong Chung | 6-3,3-6,6-3 |
| Challenger Busan Qual | 2018/05/14 02:00 | Yunseong Chung v Luke Saville | 6-7,7-6,6-0 |
| Challenger Busan Qual | 2018/05/13 04:00 | Jason Kubler v Yunseong Chung | 3-6,2-6 |
| Challenger Busan Qual | 2018/05/12 02:55 | Yunseong Chung v Patael, Ben | 6-3,6-2 |