Who is most respected for giving the man ranked as the sixth best active boxer one of the toughest fights of his career?
Guillermo Rigondeaux Guillermo Rigondeaux Ortiz (] ; born September 30, 1980) is a Cuban professional boxer. He has held multiple world championships at super bantamweight, including the WBA (Super) and lineal titles since 2013, and previously the WBO and "Ring" magazine titles between 2013 and 2016. As of May 2017, Rigondeaux is ranked as the world's best super bantamweight by "The Ring", the Transnational Boxing Rankings Board, and BoxRec; "The Ring" also ranks him as the sixth best active boxer, pound for pound.
Floyd Mayweather Jr. Floyd Joy Mayweather Jr. (born Floyd Joy Sinclair; February 24, 1977) is an American professional boxing promoter and former professional boxer. He competed from 1996 to 2007 and 2009 to 2015, and made a one-fight comeback in 2017. During his career, he held 15 world titles in five weight classes and the lineal championship in four different weight classes (twice at welterweight), and retired with an undefeated record of 50–0, surpassing Rocky Marciano's record of 49–0. As an amateur, Mayweather won a bronze medal in the featherweight division at the 1996 Olympics, three U.S. Golden Gloves championships (at light flyweight, flyweight, and featherweight), and the U.S. national championship at featherweight.