Sung Jun Kim is outside the current major-body rankings. His most recent ranking was March 1980 in the Flyweight division.
Summary from monthly sanctioning-body lists in our database (not a fight record).
| Division | First entered rankings | Most recently in rankings | Time ranked |
|---|---|---|---|
| Flyweight | January 1980 | March 1980 | 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.
