Jung Oh Son has ranking history, with the latest entry from November 2013 in the 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 |
|---|---|---|---|
| Bantamweight | June 2013 | November 2013 | 6 months |
| Super Flyweight | April 2013 | May 2013 | 2 months |
| Flyweight | November 2007 | October 2008 | 10 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.
