Oscar Leon is outside the current major-body rankings; their most recent tracked listing was October 2006 in the Super 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 |
|---|---|---|---|
| Super Featherweight | August 2005 | October 2006 | 8 months |
| Featherweight | February 2002 | November 2005 | 3 years 7 months |
| Super Bantamweight | July 2002 | July 2002 | 1 month |
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.
