Estadio: Court F Round: 27 Ground: Hardcourt indoor
| Challenger de Nanchang | 2018/04/17 03:00 | Yunseong Chung v Tatsuma Ito | 6-4,7-6 |
| Challenger de Kobe | 2018/11/14 05:00 | Nam Hoang Ly v Yunseong Chung | 4-6,2-6 |
| Challenger de Kobe | 2018/11/13 02:00 | Yunseong Chung v Jelle Sels | 7-6,7-6 |
| Challenger de Liuzhou | 2018/10/22 04:45 | Yunseong Chung v Emil Ruusuvuori | 6-3,6-3 |
| Challenger de Liuzhou | 2018/10/21 07:00 | Yunseong Chung v Youssef Hossam | 7-5,6-3 |
| Challenger de Liuzhou | 2018/10/20 08:20 | Yunseong Chung v Sidharth Rawat | 5-7,6-2,6-3 |
| Challenger de Ningbo | 2018/10/19 03:00 | Yunseong Chung v Prajnesh Gunneswaran | 2-6,1-6 |
| Challenger de Ningbo | 2018/10/17 05:15 | Yunseong Chung v Yosuke Watanuki | 2-6,7-6,6-3 |
| Challenger de Ningbo | 2018/10/15 04:05 | Ramkumar Ramanathan v Yunseong Chung | 6-1,6-7,6-7 |
| Challenger de Kobe | 2018/11/14 06:25 | Yuta Shimizu v Tatsuma Ito | 6-7,1-6 |
| Challenger de Kobe | 2018/11/12 03:35 | Di Wu v Tatsuma Ito | 4-6,3-6 |
| Challenger de Liuzhou | 2018/10/24 03:00 | Di Wu v Tatsuma Ito | 6-3,6-4 |
| Challenger de Liuzhou | 2018/10/23 02:00 | Sumit Nagal v Tatsuma Ito | 2-6,3-6 |
| Challenger de Ningbo | 2018/10/19 06:40 | Tatsuma Ito v Radu Albot | 5-7,4-6 |
| Challenger de Ningbo | 2018/10/18 03:00 | Tatsuma Ito v Rigele Te | 6-4,6-4 |
| Challenger de Ningbo | 2018/10/16 10:00 | Tatsuma Ito v Yusuke Takahashi | 7-6,6-3 |
| ATP Tokio | 2018/09/30 03:50 | Tatsuma Ito v Yosuke Watanuki | 2-6,4-6 |