| UTR Pro Yokohama | 02/03 04:15 | - | Keisuke Ota v Yoshinori Kobayashi | Walkover | |
| UTR Pro Noda | 01/18 04:15 | 28 | Ryotaro Matsumura v Yoshinori Kobayashi | 7-5,6-3 | |
| UTR Pro Noda | 01/17 03:55 | - | Koki Matsuda v Yoshinori Kobayashi | 6-7,1-6 | |
| UTR Pro Noda | 01/16 00:30 | - | Yuga Tashiro v Yoshinori Kobayashi | 2-6,0-6 | |
| UTR Pro Noda | 01/15 00:00 | - | Andras Necz v Yoshinori Kobayashi | 3-6,4-6 | |
| UTR Pro Noda | 01/13 03:25 | - | Seiya Nakanishi v Yoshinori Kobayashi | 3-6,2-6 | |
| UTR Pro Kawaguchi | 06/29 09:00 | - | Yoshinori Kobayashi v Kosuke Nakanishi | 1-6,2-6 | |
| UTR Pro Kawaguchi | 06/29 01:00 | - | Shu Matsuoka v Yoshinori Kobayashi | 6-7,4-6 | |
| UTR Pro Kawaguchi | 06/27 00:30 | - | Corey Craig v Yoshinori Kobayashi | 6-1,6-3 |