then Secretary of Recreation and Sports, approved a new rule in the boxing organization's regulation that prohibited the signing of any pugilist younger than 18 years old as a professional. In 2011, women's boxing saw an increase in popularity, gaining mainstream attention. This was fueled by the championships won by Ada Veléz and Amanda Serrano, as well as Kiria Tapia becoming the first Pan American champion in her division. List of male world champions Major Sanctioning Body Undisputed World Championship Lineal World Championship List of female world champions Current titleholders Men World champions Women International Boxing Hall of Fame See also Sport in Puerto Rico List of current world boxing champions List of boxing triple champions List of boxing quadruple champions List of boxing quintuple champions List of boxing sextuple champions List of WBC world champions List of WBA world champions List of IBF world champions List of WBO world champions List of IBO world champions Septuple Champion References Footnotes Sources Notes Men's titlists I: II: III: IV: V: VI: VII: VIII: IX: X: XI: XII: XIII: XIV: XV: XVI: XVII: XVIII: XIX: XX: XXI: XXII: XXIII: XXIV: XXV: XXVI: XXVII: XXVIII: XXIX: XXX: XXXI: XXXII: XXXIII: XXXIV: XXXV: XXXVI: XXXVII: XXXVIII: XXXIX: XL: XLI: XLII: XLIII: XLIV: XLV: XLVI: XLVII: XLVIII: XLIX: L: LI: LII: LIII: LIV: LV: LVI: LVII: LVIII: LIX: LX: LXI: LXII: LXIII: LXIV: Women's titlists A: B: C: D: External links Yahoo! Sports – Boxing International Boxing Hall of Fame world boxing champions, List of Puerto Rican Puerto Rican world boxing champions, List of Puerto Rican Boxing in Puerto Rico