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.
Joe Calzaghe Joseph William Calzaghe, {'1': ", '2': ", '3': ", '4': "} ( ; born 23 March 1972) is a Welsh former professional boxer who competed from 1993 to 2008. He is a two-weight world champion, having held the unified WBA (Super), WBC, IBF, WBO, "Ring" magazine, and lineal super-middleweight titles, as well as the "Ring" light-heavyweight title. Calzaghe is the longest-reigning super-middleweight world champion in boxing history, having held the WBO title for over 10 years and making 21 successful defences before moving up to light-heavyweight. As his super-middleweight and light-heavyweight reigns overlapped, he retired with the longest continual time as world champion of any active fighter.