Stadium: Court A Round: 25 Ground: Hardcourt outdoor
| Challenger Gimcheon Qual | 2018/05/07 05:00 | Yosuke Watanuki v Wishaya Trongcharoenchaikul | 3-6,7-5,6-7 |
| Challenger Gimcheon Qual | 2018/05/06 04:30 | Yong-Kyu Lim v Wishaya Trongcharoenchaikul | 6-2,6-7,4-6 |
| Challenger Gimcheon Qual | 2018/05/05 01:30 | Christopher Rungkat v Wishaya Trongcharoenchaikul | 2-6,6-7 |
| Challenger Seoul Qual | 2018/04/30 03:00 | Wishaya Trongcharoenchaikul v Ji Hoon Son | 6-7,4-6 |
| Davis Cup | 2018/04/08 04:10 | Jeson Patrombon v Wishaya Trongcharoenchaikul | 4-6,6-1,5-7 |
| Davis Cup | 2018/04/07 03:25 | John B D Otico v Wishaya Trongcharoenchaikul | 3-6,4-6 |
| Challenger Qujing Qual | 2018/03/18 03:00 | Wishaya Trongcharoenchaikul v Luke Saville | 6-7,6-1,3-6 |
| ITF Japan F1 | 2018/03/11 02:00 | Wishaya Trongcharoenchaikul v Daniel Nguyen | 7-5,6-7,4-6 |
| Challenger Taipei Qual | 2018/04/07 07:40 | Jimmy Wang v Kuan-Yi Lee | 6-3,6-1 |
| ITF Japan F4 | 2018/03/31 02:30 | Kuan-Yi Lee v Renta Tokuda | 0-6,2-6 |
| ITF Japan F4 | 2018/03/30 01:00 | Kuan-Yi Lee v Shintaro Imai | 6-1,2-6,6-3 |
| ITF Japan F4 | 2018/03/29 01:00 | Kuan-Yi Lee v Seong Chan Hong | 6-1,3-6,6-4 |
| ITF Japan F4 | 2018/03/28 04:15 | Zhe Li v Kuan-Yi Lee | 7-5,2-6,1-6 |
| ITF Japan F3 | 2018/03/19 05:20 | Kuan-Yi Lee v Min-Kyu Song | 6-1,3-6,4-6 |
| Challenger Zhuhai Qual | 2018/03/04 08:45 | Kuan-Yi Lee v Zihao Xia | 6-7,1-6 |
| Challenger Zhuhai Qual | 2018/03/03 03:20 | Kuan-Yi Lee v Chukang Wang | 6-2,6-4 |