Oscar Collazo is currently the RING Minimumweight titleholder. He's also the WBA Minimumweight Super Champion and WBO Minimumweight Champion.
Summary from monthly sanctioning-body lists in our database (not a fight record).
| Division | First entered rankings | Most recently in rankings | Time ranked |
|---|---|---|---|
| Minimumweight | December 2021 | July 2026 | 4 years 8 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.