Jack Gibbons, the United States boxer, is not listed in the latest monthly rankings, but has previous ranking records, with the latest entry from November 1937 in the Light Heavyweight division.
Summary from monthly sanctioning-body lists in our database (not a fight record).
| Division | First entered rankings | Most recently in rankings | Time ranked |
|---|---|---|---|
| Light Heavyweight | April 1936 | November 1937 | 1 year 3 months |
| Middleweight | August 1935 | September 1935 | 2 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.