Most racedays with other riders
Riders sorted by the number of times they started in the same race as Kota Sumiyoshi.
| # | Rider | Number of races |
|---|---|---|
| 1 | YAMAMOTO Genki | 49 |
| 2 | KUROEDA Shiki | 49 |
| 3 | OKAMOTO Hayato | 48 |
| 4 | IRIBE Shotaro | 45 |
| 5 | YASUHARA Daiki | 43 |
| 6 | SUZUKI Yuzuru | 42 |
| 7 | ARASHIRO Yudai | 41 |
| 8 | TORIBIO José Vicente | 40 |
| 9 | ABE Takayuki | 39 |
| 10 | MASUDA Nariyuki | 39 |
| 11 | YOSHIOKA Naoya | 38 |
| 12 | HATANAKA Yusuke | 38 |
| 13 | ISHIBASHI Manabu | 38 |
| 14 | ASO Keisuke | 37 |
| 15 | LEBAS Thomas | 36 |
| 16 | ONODERA Rei | 35 |
| 17 | KUROEDA Saya | 35 |
| 18 | KOMORI Ryohei | 34 |
| 19 | YAMAMOTO Masaki | 34 |
| 20 | OKA Atsushi | 33 |
| 21 | WATANABE Shotaro | 32 |
| 22 | KUSABA Keigo | 32 |
| 23 | HORI Takaaki | 32 |
| 24 | TANI Junsei | 31 |
| 25 | PRADES Benjamín | 31 |
| 26 | MAGOSAKI Daiki | 31 |
| 27 | KOISHI Yuma | 29 |
| 28 | KIMURA Keisuke | 29 |
| 29 | HAYAKAWA Tomohiro | 29 |
| 30 | SANO Junya | 26 |
| 31 | TAKEMURA Taku | 26 |
| 32 | NAKAI Tadaaki | 26 |
| 33 | MINATO Ryo | 26 |
| 34 | NISHIO Hayato | 26 |
| 35 | KOBAYASHI Marino | 25 |
| 36 | SHIBATA Masayuki | 25 |
| 37 | SUZUKI Ryu | 25 |
| 38 | YOKOYAMA Kota | 25 |
| 39 | TOKUDA Suguru | 25 |
| 40 | MUKAIGAWA Naoki | 25 |
| 41 | YOSHIDA Hayato | 25 |
| 42 | YOKOTSUKA Kohei | 25 |
| 43 | SAWADA Keitaro | 24 |
| 44 | ITO Masakazu | 24 |
| 45 | NAKAJIMA Yasuharu | 24 |
| 46 | OKUBO Jin | 23 |
| 47 | NAKANE Hideto | 22 |
| 48 | MANCEBO Francisco | 22 |
| 49 | TAKEYAMA Kosuke | 22 |
| 50 | HARADA Hiroaki | 22 |