Guillermo Rigondeaux
Notable fighters to hold championship titles at this weight have been Wayne McCullough, Guillermo Rigondeaux, Scott Quigg, Wilfredo Gómez, Lupe Pintor, Jeff Fenech, Fabrice Benichou, Daniel Zaragoza, Kennedy McKinney, Érik Morales, Marco Antonio Barrera, Manny Pacquiao, Rafael Márquez, Toshiaki Nishioka, Carl Frampton, Bernard Dunne, Leo Santa Cruz, Isaac Dogboe and Israel Vázquez. Gómez holds the record for longest title reign, at five years and ten months.