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