UTR Pro Kawaguchi 12/28 02:30 29 Yoshinori Kobayashi v Yuto Miyagawa 6-4,6-4
UTR Pro Kawaguchi 12/27 05:05 28 Yoshinori Kobayashi v Robin Eldin 6-3,6-7,6-3
UTR Pro Kawaguchi 12/26 05:20 - Ewan Ogura v Yoshinori Kobayashi 1-6,1-6
UTR Pro Kawaguchi 12/25 05:00 - Karl Kazuma Lee v Yoshinori Kobayashi 6-4,6-4
UTR Pro Kawaguchi 12/23 10:10 - Shingo Masuda v Yoshinori Kobayashi 6-2,6-4
UTR Pro Kawaguchi 12/22 05:50 - Taiyo Uenoyama v Yoshinori Kobayashi 5-7,1-6
UTR Pro Kawaguchi 05/04 03:15 29 Ryota Tanuma v Yoshinori Kobayashi 6-0,6-0
UTR Pro Kawaguchi 05/03 03:50 28 Yuga Tashiro v Yoshinori Kobayashi 1-6,1-6
UTR Pro Kawaguchi 05/01 04:20 - Ko Nagashima v Yoshinori Kobayashi 4-6,0-6
UTR Pro Kawaguchi 05/01 00:00 - Kotaro Mochizuki v Yoshinori Kobayashi 3-6,4-6
UTR Pro Kawaguchi 04/30 02:05 - Koyu Yanagi v Yoshinori Kobayashi 6-2,1-6,0-6
UTR Pro Kawaguchi 04/28 03:25 - Kenta Nakamura v Yoshinori Kobayashi 2-6,3-6
ITF M15 Nishi-Tokyo 03/18 01:00 - Yoshinori Kobayashi v Aquarius Nuovo BK Pesaro U20 4-6,6-4,0-1
UTR Pro Yokohama 02/09 01:00 29 Ryotaro Matsumura v Yoshinori Kobayashi 6-0,6-4
UTR Pro Yokohama 02/08 02:40 28 Koki Matsuda v Yoshinori Kobayashi 3-6,4-6
UTR Pro Yokohama 02/07 03:35 - Yuta Kawahashi v Yoshinori Kobayashi 6-0,6-2
UTR Pro Yokohama 02/06 03:35 - Kotaro Mochizuki v Yoshinori Kobayashi 5-7,3-6
UTR Pro Yokohama 02/05 01:00 - Takuto Terashima v Yoshinori Kobayashi 4-6,6-7
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 93 Pulsar Rivne 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