Stadium: Court 2 Round: 54 Ground: Clay
| ITF Japan F3 | 2018/03/18 01:30 | Yuichi Ito v Shunrou Takeshima | 6-7,6-7 |
| ITF Japan F2 | 2018/03/12 00:30 | Yuichi Ito v Shinta Fujii | 1-6,6-3,4-6 |
| ITF Japan F2 | 2018/03/11 00:30 | Yuichi Ito v Ryota Kishi | 7-6,7-5 |
| ITF Japan F1 | 2018/03/08 03:10 | Yuichi Ito v Takashi Saito | 2-6,4-6 |
| ITF Japan F1 | 2018/03/07 01:00 | Yuichi Ito v Taketo Takamisawa | 1-6,6-1,6-0 |
| Challenger Kyoto Qual | 2018/02/17 05:15 | Tung-Lin Wu v Yuichi Ito | 6-4,7-6 |
| ITF Israel F18 | 2017/12/13 08:00 | Dmitry Mnushkin v Yuichi Ito | 5-7,7-5,6-4 |
| ITF Israel F18 | 2017/12/12 10:55 | Eitan Dray v Yuichi Ito | 2-6,0-6 |
| 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 Malaysia F3 | 2017/10/29 00:00 | Jui-Chen Hung v Ko Suzuki | 1-6,4-6 |