Stadium: Court 7 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Daegu | 2019/06/04 02:20 | Seita Watanabe v Shin, Seung-Hun | 6-0,6-1 |
| ITF M15 Daegu | 2019/06/03 05:00 | Seita Watanabe v Lee, Dae-Hee | 6-2,6-0 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/05/16 10:30 | Manuel Guinard v Seita Watanabe | 6-3,6-1 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/05/15 08:00 | Seita Watanabe v Blokhin, Roman | 6-1,6-0 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/05/14 08:00 | Dolz, Lluis v Seita Watanabe | 0-6,1-6 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/05/07 10:35 | Ghorbel, Anis v Seita Watanabe | 6-0,6-4 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/05/01 08:30 | Seita Watanabe v Fattar, Anas | 4-6,6-7 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/04/29 13:30 | Cordonnier, Gregorio v Seita Watanabe | 4-6,6-7 |
| Luzhou, Simples M-ITF-CHN-07A | 2019/05/30 04:05 | Zheng, Weiqiang v Issei Okamura | 2-6,6-2,6-0 |
| Luzhou, Simples M-ITF-CHN-07A | 2019/05/29 02:00 | Chiu, Yu Hsiang 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 | Ehara, Hiroyasu v Issei Okamura | 4-6,2-6 |
| Wuhan, Qualifications Simples M-ITF-CHN-05A | 2019/05/07 04:00 | Issei Okamura v Tsung-Hao Huang | 3-6,6-1,8-10 |
| Wuhan, Qualifications Simples M-ITF-CHN-05A | 2019/05/06 02:00 | Issei Okamura v Bingyu Yu | 6-1,6-2 |
| Matsuyama, Singles M-ITF-JPN-06A | 2019/04/12 02:25 | Issei Okamura v Sekiguchi, Shuichi | 1-6,0-6 |
| Matsuyama, Singles M-ITF-JPN-06A | 2019/04/10 07:00 | Jumpei Yamasaki v Issei Okamura | 6-4,5-7,1-6 |