| ITF Guam F1 | 2015/05/29 04:25 | Kelsey Stevenson v Gengo Kikuchi | 2-6,3-6 |
| ITF Guam F1 | 2015/05/28 01:15 | Ken Onoda v Gengo Kikuchi | 4-6,6-7 |
| ITF Guam F1 | 2015/05/26 02:15 | Atsushi Ushida v Gengo Kikuchi | 0-6,4-6 |
| ITF Thailand F9 | 2015/04/29 04:15 | Finn Tearney v Gengo Kikuchi | 6-4,7-6 |
| ITF Thailand F9 | 2015/04/27 03:00 | Gengo Kikuchi v Ji Sung Nam | 6-4,6-7,6-3 |
| ITF Thailand F9 | 2015/04/21 08:30 | Kento Takeuchi v Gengo Kikuchi | 6-2,6-4 |
| ITF Japan F4 | 2015/03/30 05:00 | Yuichi Ito v Gengo Kikuchi | 1-6,6-3,6-3 |
| ITF Japan F3 | 2015/03/25 02:10 | Ryota Tanuma v Gengo Kikuchi | 6-3,7-5 |
| 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 |
| ITF Japan F3 | 2015/03/23 01:00 | Ko Suzuki v Jeamoon Lee | 3-6,0-6 |
| ITF Japan F3 | 2015/03/21 04:00 | Ko Suzuki v Ryotaro Matsumura | 6-0,6-1 |
| ITF Japan F2 | 2015/03/17 05:25 | Ko Suzuki v Soichiro Moritani | 6-3,3-6,2-6 |
| ITF Japan F1 | 2015/03/11 01:00 | Jarryd Chaplin v Ko Suzuki | 6-4,6-4 |
| ITF Chinese Taipei F1 | 2014/08/27 02:00 | Kento Takeuchi v Ko Suzuki | 6-0,6-4 |
| ITF Chinese Taipei F1 | 2014/08/20 02:00 | Takuto Niki v Ko Suzuki | 6-4,6-0 |