Most racedays with other riders
Riders sorted by the number of times they started in the same race as Kotaro Osawa.
| # | Rider | Number of races |
|---|---|---|
| 1 | SHINAGAWA Masahiro | 3 |
| 2 | UCHIMA Kohei | 3 |
| 3 | SHIMIZU Miyataka | 3 |
| 4 | FUKUHARA Masaru | 3 |
| 5 | KANO Tomoya | 3 |
| 6 | NONAKA Ryoma | 3 |
| 7 | YAMAKUNI Wataru | 3 |
| 8 | YAMAMOTO Masamichi | 3 |
| 9 | MORI Kazuhiro | 3 |
| 10 | MCDONALD Peter | 3 |
| 11 | IINO Yoshinori | 3 |
| 12 | BEPPU Takumi | 3 |
| 13 | AOYANAGI Kazuki | 3 |
| 14 | ITO Masakazu | 3 |
| 15 | ENATSU Shiro | 3 |
| 16 | FUKUSHIMA Shinichi | 3 |
| 17 | ENOMOTO Takeshi | 3 |
| 18 | SUZUKI Shinri | 3 |
| 19 | POLLOCK Rhys | 2 |
| 20 | TSUJIMOTO Shota | 2 |
| 21 | SANO Junya | 2 |
| 22 | HANDA Nobuyori | 2 |
| 23 | MIYAZAWA Takashi | 2 |
| 24 | HIRATSUKA Yoshimitsu | 2 |
| 25 | YONEYAMA Ikki | 2 |
| 26 | MATSUMURA Mitsuhiro | 2 |
| 27 | KURISU Takashi | 2 |
| 28 | FUKUDA Shinpei | 2 |
| 29 | FUJIMURA Junpei | 2 |
| 30 | MANABE Kazuyuki | 2 |
| 31 | NISHIZONO Ryota | 2 |
| 32 | MUKAIGAWA Naoki | 2 |
| 33 | TSUJI Yoshimitsu | 2 |
| 34 | SUZUKI Kenichi | 2 |
| 35 | INOUE Kazuo | 2 |
| 36 | NODERA Hidenori | 2 |
| 37 | HASHIMOTO Tatsuhiro | 2 |
| 38 | HIGASHI Daichi | 2 |
| 39 | MORTON Angus | 2 |
| 40 | ODA Syuhei | 2 |
| 41 | ARASHIRO Yukiya | 2 |
| 42 | IIJIMA Makoto | 2 |
| 43 | ABE Takayuki | 2 |
| 44 | ISHIDA Hikaru | 2 |
| 45 | KATO Yoshifumi | 2 |
| 46 | ABE Yoshiyuki | 2 |
| 47 | KAMATA Keisuke | 2 |
| 48 | YOSHIDA Hayato | 2 |
| 49 | TAKAGI Norikazu | 2 |
| 50 | WAKUMOTO Masaki | 2 |