Hiroyuki Iwamoto, the Japan boxer, is not listed in the latest monthly rankings, but has previous ranking records, with the latest entry from January 1980 in the Super Bantamweight 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 Bantamweight | September 1979 | January 1980 | 4 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.
