Stadium: Court 3 Round: 44 Ground: Hardcourt outdoor
| ITF - M15 Sharm El Sheikh | 2020/02/24 09:00 | Issei Okamura v Mzai, Ismael Changawa Ruwa | 6-3,3-6,10-5 |
| ITF - M15 Sharm El Sheikh | 2020/02/20 09:40 | Issei Okamura v Jacopo Berrettini | 1-6,2-6 |
| ITF - M15 Sharm El Sheikh | 2020/02/19 15:40 | Issei Okamura v Piotr Grynkowski | 6-3,7-5 |
| Nonthaburi, Singles M-ITF-THA-01A | 2020/01/26 07:50 | Issei Okamura v Kovapitukted, Palaphoom | 4-6,1-6 |
| Hong Kong, Simples M-ITF-HKG-01A | 2020/01/08 06:50 | El Midhawy, Adam v Issei Okamura | 4-6,6-2,6-3 |
| Hong Kong, Simples M-ITF-HKG-01A | 2020/01/07 02:00 | Issei Okamura v Kaewsuto, Chayanon | 6-0,6-0 |
| Hong Kong, Simples M-ITF-HKG-01A | 2020/01/06 02:00 | Issei Okamura v Geiwald, Douglas | 6-2,6-1 |
| ITF M15 Cancun | 2019/11/15 19:35 | Issei Okamura v Mariano Kestelboim | 4-6,1-6 |
| ITF - M15 Sharm El Sheikh | 2020/02/24 09:00 | Nguyen, Phuong van v Spasibo, Danil | 6-1,7-5 |
| ITF M25 Tay Ninh | 2019/10/09 02:00 | Denis Yevseyev v Nguyen, Phuong van | 6-4,6-3 |
| ITF M25 Tay Ninh | 2019/10/02 03:35 | Nguyen, Phuong van v Nam Hoang Ly | 3-6,0-6 |
| Jakarta, Singles Main, M-ITF-INA-02A | 2019/08/21 07:05 | Manish Sureshkumar v Nguyen, Phuong van | 6-1,6-4 |
| Jakarta, Singles Main, M-ITF-INA-02A | 2019/08/13 06:20 | Jumpei Yamasaki v Nguyen, Phuong van | 6-2,6-4 |
| Jakarta, Singles Main, M-ITF-INA-02A | 2019/08/06 05:45 | Boyer, Dusty H v Nguyen, Phuong van | 4-6,6-1,6-3 |
| ITF Vietnam F3 | 2018/05/15 05:45 | Nguyen, Phuong van v Kikuchi, Gengo | 4-6,2-6 |
| ITF Vietnam F2 | 2018/05/09 05:50 | Nguyen, Phuong van v Nam, Ji Sung | 4-6,2-6 |