| ITF - Japan F1 | 2015/03/07 01:00 | Yohei Ono v Masayoshi Ono | 6-4,7-6 |
| ITF - Japan F7 | 2014/06/21 03:20 | Yohei Ono v Hiromasa Oku | 2-6,4-6 |
| ITF - Japan F7 | 2014/06/20 02:30 | Yohei Ono v Chih-Jen Ho | 4-6,6-3,6-2 |
| ITF - Japan F7 | 2014/06/19 01:00 | Katsuki Nagao v Yohei Ono | 5-7,5-7 |
| ITF - Japan F6 | 2014/06/11 07:25 | Yohei Ono v Atsushi Ushida | 6-7,4-6 |
| ITF - Japan F5 | 2014/06/02 03:00 | Gengo Kikuchi v Yohei Ono | 6-4,6-2 |
| ITF - Japan F3 | 2014/03/26 01:00 | Yohei Ono v Sho Katayama | 2-6,3-6 |
| ITF - Japan F3 | 2014/03/24 01:00 | Yohei Ono v Yuki Nakamura | 6-2,6-1 |
| ITF - Australien F2 | 2015/03/04 02:55 | Brydan Klein v Ken Onishi | 6-3,6-2 |
| ITF - Australien F2 - Qualifikation | 2015/03/01 23:30 | Ken Onishi v Blazo N Djurovic | 6-3,7-6 |
| ITF - Australien F1 | 2015/02/24 01:00 | Ken Onishi v Gavin Van Peperzeel | 3-6,4-6 |
| ITF - Australien F1 - Qualifikation | 2015/02/22 23:30 | Ken Onishi v William Ma | 6-3,7-5 |
| ITF - Australien F1 - Qualifikation | 2015/02/22 00:30 | Ken Onishi v Marlino Pascual | 6-1,6-2 |
| ITF - Tunesien F9 | 2014/11/24 10:55 | Vasko Mladenov v Ken Onishi | 6-1,6-3 |
| ITF - Tunesien F9 | 2014/11/23 10:00 | Levar Harper-Griffith v Ken Onishi | 3-6,3-6 |
| ITF - Tunesien F8 | 2014/11/17 13:15 | Imran Aswat v Ken Onishi | 6-7,6-4,6-4 |