Stadium: Ct 11 Round: 27 Ground: Clay
| Challenger Ilkley Qual | 2018/06/17 15:20 | Brayden Schnur v Brydan Klein | 7-6,7-6 |
| Challenger Ilkley Qual | 2018/06/17 11:35 | Brydan Klein v Stefan Kozlov | 4-6,6-1,7-5 |
| Challenger Nottingham Qual | 2018/06/10 15:00 | Brayden Schnur v Brydan Klein | 2-6,6-4,6-4 |
| Challenger Nottingham Qual | 2018/06/09 15:55 | Marcus Willis v Brydan Klein | 1-6,3-6 |
| Challenger Surbiton Qual | 2018/06/04 10:00 | Taylor Fritz v Brydan Klein | 6-3,6-2 |
| Challenger Surbiton Qual | 2018/06/03 10:00 | Brydan Klein v Evan King | 6-4,6-3 |
| Challenger Surbiton Qual | 2018/06/02 12:05 | Vishnu Vardhan v Brydan Klein | 4-6,3-6 |
| Challenger Gimcheon Qual | 2018/05/07 05:00 | Renta Tokuda v Brydan Klein | 1-6,6-3,6-4 |
| Challenger Gwangju Qual | 2018/08/11 01:30 | Issei Okamura v Jung-Woong Na | 3-6,6-1,1-6 |
| Challenger Jinan | 2018/08/06 02:00 | Tak Khunn Wang v Issei Okamura | 6-1,6-2 |
| Challenger Jinan | 2018/08/05 02:00 | Chien Hsun Lo v Issei Okamura | 6-7,1-6 |
| Challenger Chengdu Qual | 2018/07/28 03:35 | Issei Okamura v Blake Ellis | 6-4,1-6,5-7 |
| ITF Chinese Taipei F2 | 2018/07/26 02:00 | Issei Okamura v Chun Hsin Tseng | 3-6,4-6 |
| ITF Chinese Taipei F2 | 2018/07/24 02:00 | Issei Okamura v Liang-Yu Lin | 6-2,6-2 |
| ITF Chinese Taipei F1 | 2018/07/19 04:05 | Yu Hsiou Hsu v Issei Okamura | 7-6,7-5 |
| ITF Chinese Taipei F1 | 2018/07/18 03:50 | Issei Okamura v Francesco Vilardo | 7-5,6-4 |