Stadium: Centre Court(Cc14) Round: 27
| ITF Singapore F2 | 2018/05/23 06:25 | Kazuki Nishiwaki v Calum Puttergill | 6-3,7-6 |
| ITF Singapore F2 | 2018/05/22 02:00 | Jacob Grills v Kazuki Nishiwaki | 3-6,6-3,5-7 |
| ITF Singapore F2 | 2018/05/20 03:00 | Kazuki Nishiwaki v Ken Onoda | 6-1,6-2 |
| 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 Singapore F2 | 2018/05/23 07:05 | Mousheg Hovhannisyan v Makoto Ochi | 7-6,6-7,4-6 |
| ITF Singapore F2 | 2018/05/22 02:00 | David Agung Susanto v Makoto Ochi | 1-6,0-6 |
| Challenger Gimcheon | 2018/05/11 02:00 | Yoshihito Nishioka v Makoto Ochi | 6-2,6-2 |
| Challenger Gimcheon | 2018/05/10 02:00 | Makoto Ochi v Luke Saville | 4-6,6-1,7-6 |
| Challenger Gimcheon | 2018/05/08 05:40 | Young Seok Lee v Makoto Ochi | 1-6,1-6 |
| Challenger Gimcheon Qual | 2018/05/07 05:00 | Makoto Ochi v Luke Saville | 2-6,6-3,7-6 |
| Challenger Gimcheon Qual | 2018/05/06 04:30 | Hiroyasu Ehara v Makoto Ochi | 7-6,3-6,4-6 |
| Challenger Gimcheon Qual | 2018/05/05 02:50 | Tae-Woo Lee v Makoto Ochi | 4-6,1-6 |