Willie Jansen has ranking history, with the latest entry from April 1977 in the Flyweight division.
Previous:Flyweight
Willie Jansen has ranking history, with the latest entry from April 1977 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 | September 1976 | April 1977 | 7 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.
