Dong Kyun Yum, the South Korea boxer, is not listed in the latest monthly rankings, but has previous ranking records, with the latest entry from November 1977 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 | November 1976 | November 1977 | 12 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.
