Stadium: Court 5 Round: 54 Ground: Clay
| ITF Japan F5 | 2018/03/31 00:30 | Yuichi Ito v Ko Suzuki | 6-7,2-6 |
| ITF Japan F4 | 2018/03/25 01:00 | Tamaki Yamao v Ko Suzuki | 6-4,6-2 |
| ITF Japan F3 | 2018/03/17 02:30 | Gengo Kikuchi v Ko Suzuki | 6-2,3-6,6-3 |
| Challenger Kyoto Qual | 2018/02/19 01:30 | Ko Suzuki v Takanyi Garanganga | 5-7,4-6 |
| Challenger Kyoto Qual | 2018/02/18 02:45 | Naoki Nakagawa v Ko Suzuki | 6-7,6-7 |
| Challenger Kyoto Qual | 2018/02/17 02:30 | Makoto Ochi v Ko Suzuki | 6-4,4-6,6-7 |
| ITF Malaysia F3 | 2017/10/31 01:30 | Hady Habib v Ko Suzuki | 6-2,6-4 |
| ITF Malaysia F3 | 2017/10/30 02:00 | Ko Suzuki v Mikalai Haliak | 6-3,6-4 |
| ITF Australia F4 | 2018/03/27 01:35 | Kazuma Kawachi v Andrew Whittington | 2-6,3-6 |
| ITF Australia F3 | 2018/03/21 00:25 | Kazuma Kawachi v Mustafa Ibraimi | 6-2,5-7,3-6 |
| ITF India F2 | 2018/03/06 07:10 | Arjun Kadhe v Kazuma Kawachi | 6-1,6-1 |
| ITF India F2 | 2018/03/04 04:30 | Kazuma Kawachi v Ankit Chopra | 7-6,6-1 |
| ITF India F2 | 2018/03/03 04:00 | Kazuma Kawachi v Vasisht Cheruku | 6-1,6-3 |
| ITF India F1 | 2018/02/27 06:15 | Kazuma Kawachi v Francesco Vilardo | 2-6,6-0,6-7 |
| Challenger Kyoto Qual | 2018/02/17 01:00 | Ryota Tanuma v Kazuma Kawachi | 6-3,6-0 |
| ITF Kuwait F2 | 2017/11/04 06:00 | Kazuma Kawachi v Anvit Bendre | 6-1,6-4 |