Stadium: Court 3 Round: 25 Ground: Hardcourt outdoor
| Challenger Seoul Qual | 2018/04/30 05:00 | Renta Tokuda v Grills, Jacob | 6-3,6-2 |
| Challenger Seoul Qual | 2018/04/29 04:55 | Renta Tokuda v Lim, Yong-Kyu | 6-4,6-4 |
| ITF Japan F6 | 2018/04/15 04:00 | Ehara, Hiroyasu v Renta Tokuda | 0-6,6-7 |
| ITF Japan F6 | 2018/04/14 01:00 | Renta Tokuda v Makoto Ochi | 6-2,6-2 |
| ITF Japan F6 | 2018/04/13 03:15 | Renta Tokuda v Jumpei Yamasaki | 4-6,6-2,6-4 |
| ITF Japan F6 | 2018/04/10 02:45 | Renta Tokuda v Sho Shimabukuro | 6-4,4-6,6-2 |
| ITF Japan F5 | 2018/04/04 01:00 | Taisei Ichikawa v Renta Tokuda | 6-3,6-3 |
| ITF Japan F5 | 2018/04/03 04:10 | Katayama, Sho v Renta Tokuda | 2-6,4-6 |
| Anning, China | 2018/04/25 03:00 | Yang, Tsung-Hua v Kamil Majchrzak | 6-4,3-6,2-6 |
| Anning, China | 2018/04/24 03:00 | Yang, Tsung-Hua v Nedovyesov, Aleksandr | 6-4,4-6,6-0 |
| Nanchang, China | 2018/04/18 03:00 | Evgeny Donskoy v Yang, Tsung-Hua | 6-7,6-3,7-6 |
| Nanchang, China | 2018/04/16 03:00 | Yang, Tsung-Hua v Grigelis, Laurynas | 0-6,7-6,6-3 |
| Taipei, Chinese Taipei | 2018/04/10 05:40 | Ebden, Matthew v Yang, Tsung-Hua | 6-3,6-4 |
| Coupe Davis | 2018/04/07 05:45 | Yang, Tsung-Hua v Khaledan, Shahin | 6-4,6-3 |
| Portugal F4, Singles Qualifying | 2018/03/16 15:25 | Yang, Tsung-Hua v Neuchrist, Maximilian | 2-6,3-6 |
| Portugal F4, Singles Qualifying | 2018/03/15 12:10 | Yang, Tsung-Hua v Daniel Batista | 6-3,6-0 |