Round: 54 Ground: Hardcourt outdoor
| Zimbabwe F3, Singles Qualifying | 2016/07/05 10:45 | Kalambay, Jessy v Onishi, Ken | 6-4,7-5 |
| ITF Zimbabwe F2 | 2016/06/28 08:00 | Onishi, Ken v Vishnu Vardhan | 4-6,3-6 |
| ITF Zimbabwe F1 | 2016/06/21 08:00 | Onishi, Ken v Vinsant, Shane | 6-3,3-6,5-7 |
| ITF Japan F8 | 2016/06/14 04:25 | Renta Tokuda v Onishi, Ken | 6-0,7-5 |
| ITF Japan F7 | 2016/06/06 05:05 | Onozawa, Arata v Onishi, Ken | 6-4,6-7,6-0 |
| ITF Japan F6 | 2016/05/31 02:30 | Onishi, Ken v Kikuchi, Gengo | 1-6,4-6 |
| ITF Guam F1 | 2016/05/23 00:00 | Baughman, Deiton v Onishi, Ken | 6-1,6-4 |
| ITF India F3 | 2016/05/11 04:00 | Onishi, Ken v Ito, Yuya | 4-6,4-6 |