Stadium: Court 3 Round: 44 Ground: Hardcourt outdoor
| ITF M15 Sharm El Sheikh | 2020/02/24 09:00 | Issei Okamura v Ismael C R Mzai | 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 |
| ITF M25 Nonthaburi | 2020/01/26 07:50 | Issei Okamura v Palaphoom Kovapitukted | 4-6,1-6 |
| ITF M15 Hong Kong | 2020/01/08 06:50 | Adam El Mihdawy v Issei Okamura | 4-6,6-2,6-3 |
| ITF M15 Hong Kong | 2020/01/07 02:00 | Issei Okamura v Chayanon Kaewsuto | 6-0,6-0 |
| ITF M15 Hong Kong | 2020/01/06 02:00 | Issei Okamura v Douglas Geiwald | 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 | Phuong Van Nguyen v Danil Spasibo | 6-1,7-5 |
| ITF M25 Tay Ninh | 2019/10/09 02:00 | Denis Yevseyev v Phuong Van Nguyen | 6-4,6-3 |
| ITF M25 Tay Ninh | 2019/10/02 03:35 | Phuong Van Nguyen v Nam Hoang Ly | 3-6,0-6 |
| ITF M15 Jakarta | 2019/08/21 07:05 | Manish Sureshkumar v Phuong Van Nguyen | 6-1,6-4 |
| ITF M15 Jakarta | 2019/08/13 06:20 | Jumpei Yamasaki v Phuong Van Nguyen | 6-2,6-4 |
| ITF M15 Jakarta | 2019/08/06 05:45 | Dusty H. Boyer v Phuong Van Nguyen | 4-6,6-1,6-3 |
| ITF Vietnam F3 | 2018/05/15 05:45 | Phuong Van Nguyen v Gengo Kikuchi | 4-6,2-6 |
| ITF Vietnam F2 | 2018/05/09 05:50 | Phuong Van Nguyen v Ji Sung Nam | 4-6,2-6 |