Stadium: Centre Court(Cc14) Round: 54
| ITF Singapore F2 Qual | 2017/05/28 04:00 | Kazuki Nishiwaki v Ken Onoda | 5-7,6-1,1-6 |
| ITF Singapore F2 | 2018/05/19 02:00 | Kazuki Nishiwaki v Anthony Susanto | 6-0,6-1 |
| ITF Vietnam F2 | 2018/05/11 03:00 | Chun Hsin Tseng v Kazuki Nishiwaki | 6-3,3-6,6-3 |
| ITF Vietnam F2 | 2018/05/09 03:00 | Nitin Kumar Sinha v Kazuki Nishiwaki | 4-6,1-6 |
| ITF Vietnam F2 | 2018/05/08 05:25 | Kazuki Nishiwaki v Pruchya Isarow | 6-4,7-5 |
| ITF Vietnam F2 | 2018/05/06 04:00 | Kazuki Nishiwaki v Palaphoom Kovapitukted | 7-6,6-3 |
| ITF Vietnam F1 | 2018/05/04 03:00 | Nam Hoang Ly v Kazuki Nishiwaki | 6-1,6-3 |
| ITF Vietnam F1 | 2018/05/02 03:00 | Kazuki Nishiwaki v Aaron Addison | 7-5,6-7,6-2 |
| ITF Vietnam F1 | 2018/04/30 04:50 | Kazuki Nishiwaki v Minh Tuan Pham | 6-2,6-2 |
| ITF Singapore F2 | 2018/05/19 02:00 | Jonathan-kyle Tan v Ken Onoda | 6-7,2-6 |
| ITF Singapore F1 | 2018/05/14 02:00 | Mousheg Hovhannisyan v Ken Onoda | 6-0,6-1 |
| ITF Japan F6 Qual | 2018/04/08 04:00 | Masayoshi Ono v Ken Onoda | 6-2,6-4 |
| ITF Japan F5 | 2018/04/01 00:30 | Ken Onoda v Masaki Sasai | 3-6,1-6 |
| ITF Japan F5 | 2018/03/31 00:30 | Takashi Saito v Ken Onoda | 3-6,4-6 |
| ITF Greece F3 | 2018/03/10 07:30 | Federico Moreno v Ken Onoda | 6-3,6-4 |
| ITF Greece F2 | 2018/03/04 08:00 | Duje Ajdukovic v Ken Onoda | 7-5,7-6 |
| ITF Greece F2 | 2018/03/03 07:30 | Ken Onoda v Andreas A Lavdas | 6-1,6-2 |