You can make a very good case he ranks above Hopkins. He's been champion for 9 years, he has won 6 world titles in 5 weight classes, he has never tasted defeat, and he holds wins over De La Hoya, Hatton, Castillo (2), Corrales, Hernandez, Judah, Gatti, and Chavez. Mayweather has never dominated a division like Hopkins did at MW, despite his stay at super featherweight. Hopkins' 10 years as champion and 20 title defenses surpass Floyd's great stay at 130.