| ITF Japan F8 | 2015/06/25 02:00 | Shunrou Takeshima v Ko Suzuki | 6-3,6-2 |
| ITF Japan F8 | 2015/06/24 02:45 | Ko Suzuki v Yusuke Watanuki | 6-3,6-4 |
| ITF Japan F7 | 2015/06/16 00:30 | Ko Suzuki v Yusuke Watanuki | 0-6,2-6 |
| ITF Japan F6 | 2015/06/11 01:00 | Ko Suzuki v Kento Takeuchi | 6-7,3-6 |
| ITF Japan F6 Qual | 2015/06/07 01:00 | Ko Suzuki v Kento Tanaka-Tamaki | 6-2,6-3 |
| ITF Guam F1 | 2015/05/30 04:20 | Gengo Kikuchi v Ko Suzuki | 6-2,6-3 |
| ITF Guam F1 | 2015/05/29 05:10 | Ko Suzuki v Sho Katayama | 6-3,4-6,6-2 |
| ITF Guam F1 | 2015/05/28 00:00 | Koichi Sano v Ko Suzuki | 2-6,1-6 |