Round: 54 Ground: Hardcourt outdoor
| ITF Thailand F4 | 2016/08/20 06:00 | Ken Onishi v Charles Roberts | 6-4,6-2 |
| ITF Zimbabwe F3 | 2016/07/05 10:45 | Jessy Kalambay v Ken Onishi | 6-4,7-5 |
| ITF Zimbabwe F2 | 2016/06/28 08:00 | Ken Onishi v Vishnu Vardhan | 4-6,3-6 |
| ITF Zimbabwe F1 | 2016/06/21 08:00 | Ken Onishi v Shane Vinsant | 6-3,3-6,5-7 |
| ITF Japan F8 | 2016/06/14 04:25 | Renta Tokuda v Ken Onishi | 6-0,7-5 |
| ITF Japan F7 | 2016/06/06 05:05 | Arata Onozawa v Ken Onishi | 6-4,6-7,6-0 |
| ITF Japan 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 Thailand F4 | 2016/08/20 06:00 | Natthasith Kunsuwan v Pedro Scocuglia | 5-7,7-6,6-1 |
| ITF Thailand F9 | 2015/11/21 05:00 | Natthasith Kunsuwan v Vorachon Rakpuangchon | 1-6,4-6 |
| ITF Thailand F9 | 2015/08/08 03:00 | Chayanon Kaewsuto v Natthasith Kunsuwan | 6-3,6-2 |
| ITF Thailand F9 | 2015/06/13 05:00 | Dae-Hee Lee v Natthasith Kunsuwan | 6-0,6-1 |