Mike Oliver has ranking history, with the latest entry from September 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 | June 2011 | September 2011 | 2 months |
| Super Bantamweight | November 2006 | August 2010 | 1 year 8 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.
