Kenichi Yamaguchi has ranking history, with the latest entry from July 2011 in the Featherweight division.
Summary from monthly sanctioning-body lists in our database (not a fight record).
| Division | First entered rankings | Most recently in rankings | Time ranked |
|---|---|---|---|
| Featherweight | July 2011 | July 2011 | 1 month |
| Super Bantamweight | January 2010 | June 2011 | 1 year 3 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.
