Stadium: Center Court Round: 27 Ground: Hardcourt outdoor
| ITF Chinese Taipei F1 | 2015/08/22 02:00 | Tsung-Hua Yang v Issei Okamura | 6-0,6-1 |
| ITF China F3 | 2018/01/24 05:30 | Issei Okamura v Cing-Yang Meng | 7-6,6-2 |
| ITF China F3 | 2018/01/23 02:30 | Yan Bai v Issei Okamura | 1-6,0-6 |
| ITF China F2 | 2018/01/18 02:30 | Issei Okamura v Goran Markovic | 6-2,0-6,5-7 |
| ITF China F2 | 2018/01/16 03:40 | Hu Liu v Issei Okamura | 7-5,4-6,2-6 |
| ITF China F1 | 2018/01/11 02:30 | Ryota Tanuma v Issei Okamura | 6-1,6-2 |
| ITF China F1 | 2018/01/09 04:50 | Issei Okamura v Lingxi Zhao | 3-6,6-3,6-4 |
| ITF Vietnam F3 | 2017/11/25 03:00 | Issei Okamura v Arjun Kadhe | 1-6,1-6 |
| ITF Vietnam F3 | 2017/11/24 03:00 | Rio Noguchi v Issei Okamura | 2-6,2-6 |
| ITF China F3 | 2018/01/24 05:55 | Yu Hsiang Chiu v Tsung-Hua Yang | 0-6,3-6 |
| ITF China F3 | 2018/01/23 03:55 | William Ma v Tsung-Hua Yang | 2-6,3-6 |
| ITF China F2 | 2018/01/21 03:00 | Tsung-Hua Yang v Steven Diez | 6-3,3-6,7-6 |
| ITF China F2 | 2018/01/20 02:30 | Tsung-Hua Yang v Kuan-Yi Lee | 6-3,7-5 |
| ITF China F2 | 2018/01/19 02:30 | Tsung-Hua Yang v Goran Markovic | 6-1,6-4 |
| ITF China F2 | 2018/01/18 02:30 | Tsung-Hua Yang v Ruikai Wang | 6-4,6-3 |
| ITF China F2 | 2018/01/16 02:00 | Tsung-Hua Yang v Chukang Wang | 6-1,6-2 |
| Challenger Bangkok | 2018/01/09 04:25 | Tsung-Hua Yang v Frederik Nielsen | 4-6,3-6 |