Stadium: Court 7 Round: 24 Ground: Hardcourt outdoor
| Challenger Chengdu | 2019/07/29 10:45 | Issei Okamura v Yusuke Takahashi | 1-6,2-6 |
| Challenger Granby | 2019/07/22 14:00 | Issei Okamura v Takanyi Garanganga | 4-6,4-6 |
| Challenger Winnipeg | 2019/07/08 16:00 | Issei Okamura v Justin Boulais | 2-6,5-7 |
| ITF M15 Tegu | 2019/06/05 03:55 | Seita Watanabe v Issei Okamura | 6-4,7-6 |
| ITF M25 Lu-čou | 2019/05/30 04:05 | Weiqiang Zheng v Issei Okamura | 2-6,6-2,6-0 |
| ITF M25 Lu-čou | 2019/05/29 02:00 | Yu Hsiang Chiu v Issei Okamura | 4-6,1-6 |
| ITF M25 Luan | 2019/05/16 05:05 | Yu Hsiou Hsu v Issei Okamura | 6-3,7-5 |
| ITF M25 Luan | 2019/05/14 05:15 | Hiroyasu Ehara v Issei Okamura | 4-6,2-6 |
| Challenger Chengdu | 2019/07/31 02:00 | Jie Cui v Yuichi Sugita | 1-6,4-6 |
| Challenger Chengdu | 2019/07/30 03:35 | Jie Cui v Alafia Ayeni | 6-2,6-1 |
| ITF M25 Taipei | 2019/07/17 04:50 | Jie Cui v Wei-De Lin | 3-6,2-6 |
| ITF M25 Qujing | 2019/07/11 03:40 | Jie Cui v Kento Takeuchi | 4-6,1-6 |
| ITF M25 Qujing | 2019/07/10 05:05 | Jie Cui v Ruikai Wang | 6-2,6-7,6-3 |
| ITF M25 Shenzhen | 2019/06/14 03:00 | Yan Bai v Jie Cui | 6-1,6-1 |
| ITF M25 Shenzhen | 2019/06/13 06:20 | Hanyi Liu v Jie Cui | 6-7,2-6 |
| ITF M25 Shenzhen | 2019/06/12 02:00 | Bingyu Yu v Jie Cui | 6-3,4-6,1-6 |