Stadium: Court 5 Round: 26 Ground: Clay
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/05/08 09:40 | Kazuma Kawachi v Onishi, Ken | 7-6,5-7,0-6 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/05/01 11:10 | Lakat, Florian v Onishi, Ken | 6-3,4-6,6-0 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/04/29 08:00 | Recci, Mason v Onishi, Ken | 4-6,1-6 |
| Matsuyama, Singles M-ITF-JPN-06A | 2019/04/09 02:50 | Brymer, Gage v Onishi, Ken | 7-6,6-2 |
| ITF - M15 Tsukuba | 2019/03/25 01:00 | Ryuki Matsuda v Onishi, Ken | 6-2,6-3 |
| Kofu, Qualifications Simples M-ITF-JPN-03A | 2019/03/18 00:30 | Veldheer, Mick v Onishi, Ken | 7-5,6-2 |
| ITF - M15 Sharm El Sheikh | 2019/03/11 08:00 | Onishi, Ken v Tsivadze, George | 3-6,6-2,8-10 |
| ITF - M15 Sharm El Sheikh | 2019/03/06 12:35 | Onishi, Ken v Tsivadze, George | 3-6,6-2,3-6 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/05/08 12:15 | Feler, Melik v Perchicot, Mathieu | 2-6,1-6 |
| ITF M15 Cairo | 2019/05/03 11:00 | Tepavac, Marko v Perchicot, Mathieu | 4-6,6-4,7-6 |
| ITF M15 Cairo | 2019/05/02 09:30 | Uspensky, Dennis v Perchicot, Mathieu | 6-7,6-1,4-6 |
| ITF M15 Cairo | 2019/05/01 12:35 | Park, Uisung v Perchicot, Mathieu | 2-6,6-3,3-6 |
| ITF M15 Cairo | 2019/04/25 10:55 | Perchicot, Mathieu v Pierre Delage | 2-6,2-6 |
| ITF M15 Cairo | 2019/04/24 12:35 | Perchicot, Mathieu v Saraiva, Bernardo | 7-6,7-6 |
| ITF M15 Cairo | 2019/04/20 08:00 | Perchicot, Mathieu v Toledo Bague, Pol | 5-7,7-6,2-6 |
| ITF M15 Cairo | 2019/04/19 08:00 | Dhoe, Benjamin v Perchicot, Mathieu | 3-6,1-6 |