Most racedays with other riders
Riders sorted by the number of times they started in the same race as Mitsuhiro Matsumura.
| # | Rider | Number of races |
|---|---|---|
| 1 | NISHITANI Taiji | 14 |
| 2 | YAMAMOTO Masamichi | 14 |
| 3 | SUZUKI Shinri | 14 |
| 4 | FUKUHARA Masaru | 13 |
| 5 | IINO Yoshinori | 13 |
| 6 | KANO Tomoya | 13 |
| 7 | NODERA Hidenori | 12 |
| 8 | AYABE Takeaki | 12 |
| 9 | BEPPU Takumi | 12 |
| 10 | SUZUKI Kenichi | 12 |
| 11 | TSUJI Yoshimitsu | 12 |
| 12 | FUKUDA Shinpei | 11 |
| 13 | FUKUSHIMA Shinichi | 11 |
| 14 | MORI Kazuhiro | 11 |
| 15 | SHIMIZU Miyataka | 10 |
| 16 | HATANAKA Yusuke | 10 |
| 17 | IIJIMA Makoto | 10 |
| 18 | WAKUMOTO Masaki | 10 |
| 19 | SUZUKI Yuzuru | 10 |
| 20 | KAKINUMA Akira | 10 |
| 21 | YONEYAMA Ikki | 10 |
| 22 | SHINAGAWA Masahiro | 10 |
| 23 | SANO Junya | 9 |
| 24 | KO Siu Wai | 9 |
| 25 | YEUNG Ronald | 9 |
| 26 | MANABE Kazuyuki | 9 |
| 27 | KAMATA Keisuke | 9 |
| 28 | SAITO Shota | 9 |
| 29 | MUKAIGAWA Naoki | 9 |
| 30 | UCHIMA Kohei | 9 |
| 31 | HIRATSUKA Yoshimitsu | 9 |
| 32 | NAKAMURA Makoto | 8 |
| 33 | SHIMIZU Yoshiyuki | 8 |
| 34 | NAGANUMA Takayuki | 8 |
| 35 | ABE Yoshiyuki | 8 |
| 36 | HIOKI Daisuke | 8 |
| 37 | ITO Masakazu | 8 |
| 38 | PENG Kuei Hsiang | 8 |
| 39 | KODAN Akira | 7 |
| 40 | YAMANE Masafumi | 7 |
| 41 | PRIA Lars | 7 |
| 42 | HIRABAYASHI Masaki | 7 |
| 43 | INOUE Kazuo | 7 |
| 44 | YOSHIDA Hayato | 7 |
| 45 | HSIN HUA Huang | 7 |
| 46 | IWASHIMA Keita | 7 |
| 47 | TSUJI Takamitu | 6 |
| 48 | SALEH Mohd Zamri | 6 |
| 49 | HIROSE Yoshimasa | 6 |
| 50 | ARASHIRO Yukiya | 6 |