Kazuhiro Ryuko, the Japan boxer, is not listed in the latest monthly rankings, but has previous ranking records, with the latest entry from July 2002 in the Super Flyweight division.
Summary from monthly sanctioning-body lists in our database (not a fight record).
| Division | First entered rankings | Most recently in rankings | Time ranked |
|---|---|---|---|
| Super Flyweight | November 2000 | July 2002 | 1 year 9 months |
Time ranked counts distinct months this fighter appears on a rankings list for that division. If they drop out and return later, months off the ranking lists are not included.
