| UTR Pro Noda | 01/11 05:40 | 28 | Keisuke Ota v Yusuke Yoshikawa | Walkover | |
| UTR Pro Noda | 01/10 03:45 | - | Yuga Tashiro v Keisuke Ota | Retired | |
| ITF M15 Yanagawa | 10/28 04:00 | 54 | Keisuke Ota v Ke Hau Hung | 3-6,3-6 | |
| ITF M15 Tanagura | 10/20 00:30 | 54 | Keisuke Ota v Shu Muto | 4-6,0-6 | |
| ITF M25 Sapporo | 09/02 01:00 | 54 | Hiroki Sakagawa v Keisuke Ota | 6-0,6-0 | |
| UTR Pro Kawaguchi | 06/24 02:44 | - | Brody Nejedly-Krall v Keisuke Ota | 6-2,2-6,7-5 |