Round: 44 Ground: Hardcourt outdoor
| ITF Hong Kong F2 | 2014/07/14 03:30 | Gengo Kikuchi v Hiromasa Oku | 6-7,6-4,6-2 |
| ITF Japan F6 | 2014/06/10 03:20 | Gengo Kikuchi v Hiromasa Oku | 3-6,6-7 |
| ITF Japan F3 | 2016/03/19 03:45 | Hiromasa Oku v Ko Suzuki | 5-7,7-6,7-5 |
| ITF Japan F2 | 2016/03/13 01:00 | Hiromasa Oku v Shintaro Imai | 1-6,0-6 |
| ITF Japan F2 | 2016/03/12 02:00 | Hiromasa Oku v Yutaro Matsuzaki | 6-4,5-7,6-3 |
| ITF Japan F1 | 2016/03/10 01:00 | Hiromasa Oku v Shintaro Imai | 6-3,2-6,1-6 |
| ITF Japan F8 | 2015/06/24 01:10 | Hiromasa Oku v Sho Katayama | 6-7,0-6 |
| ITF Japan F7 | 2015/06/19 03:00 | Hiromasa Oku v Yusuke Watanuki | 2-6,3-6 |
| ITF Japan F7 | 2015/06/18 02:05 | Hiromasa Oku v Makoto Ochi | 6-4,6-3 |
| ITF Japan F7 | 2015/06/16 00:30 | Hiromasa Oku v Ku Keon Kang | 6-2,6-1 |
| ITF Japan F2 | 2016/03/18 01:30 | Yunseong Chung v Gengo Kikuchi | 2-6,6-4,6-1 |
| ITF Japan F2 | 2016/03/16 02:30 | Gengo Kikuchi v Sora Fukuda | 7-5,6-3 |
| ITF Japan F2 | 2016/03/15 04:35 | Karunuday Singh v Gengo Kikuchi | 4-6,6-3,5-7 |
| ITF Japan F1 | 2016/03/13 02:00 | Gengo Kikuchi v Liang-Chi Huang | 5-7,5-7 |
| ITF Japan F1 | 2016/03/12 05:30 | Gengo Kikuchi v Shuichi Sekiguchi | 7-6,6-1 |
| ITF Japan F1 | 2016/03/12 01:00 | Takuto Niki v Gengo Kikuchi | 6-7,6-4,3-6 |
| ITF Japan F1 | 2016/03/10 01:00 | Gengo Kikuchi v Yuqing Ning | 6-3,6-3 |
| ITF Japan F1 | 2016/03/07 01:00 | Gengo Kikuchi v Yuga Tashiro | 6-1,4-6,6-1 |