Round: 25 Ground: Hardcourt outdoor
| ITF Japan F2 | 2016/03/13 01:00 | Aoran Wang v Watanuki, Keisuke | 0-6,4-6 |
| ITF Japan F2 | 2016/03/12 00:30 | Numajiri, Keisuke v Watanuki, Keisuke | 6-2,2-6,1-6 |
| ITF Japan F1 | 2016/03/10 02:35 | Niki, Takuto v Watanuki, Keisuke | 7-5,6-2 |
| ITF Japan F1 | 2016/03/07 01:00 | Watanuki, Keisuke v Kazuma Kawachi | 6-1,6-1 |
| ITF Japan F1 | 2016/03/06 03:00 | Watanuki, Keisuke v Sora Fukuda | 6-1,3-6,6-3 |
| ITF Japan F1 | 2016/03/05 03:00 | Watanuki, Keisuke v Yuichiro Inui | 6-2,6-3 |
| ITF Japan F8 | 2015/06/25 01:00 | Numajiri, Keisuke v Watanuki, Keisuke | 3-6,3-6 |
| ITF Japan F8 | 2015/06/24 02:45 | Watanuki, Keisuke v Ito, Yuichi | 6-1,7-5 |
| ITF Japan F1 | 2016/03/12 01:00 | Sekiguchi, Shuichi v Kibi, Yuya | 6-4,6-3 |
| ITF Japan F1 | 2016/03/10 02:40 | Ryota Tanuma v Kibi, Yuya | 4-6,3-6 |
| ITF China F13 | 2015/08/13 02:00 | Kibi, Yuya v Onozawa, Arata | 6-1,1-6,2-6 |
| ITF China F13 | 2015/08/12 02:00 | Kibi, Yuya v Chen, Long | 4-6,7-6,6-2 |
| ITF China F12 | 2015/08/03 09:10 | Kibi, Yuya v Ouyang, Bowen | 3-6,3-6 |
| ITF China F11 | 2015/07/23 02:00 | Zhe Li v Kibi, Yuya | 4-6,6-4,6-4 |
| ITF China F11 | 2015/07/22 02:50 | Kuan-Yi Lee v Kibi, Yuya | 4-6,1-6 |
| ITF China F11 | 2015/07/20 03:45 | Kibi, Yuya v Balaji, N. Sriram | 7-5,3-6,6-4 |