With 17 weight classes in boxing ... light heavyweight champion WBO: Canelo Alvarez IBF: William Scull WBA: Canelo Alvarez WBC: Canelo Alvarez* *David Benavidez is the WBC super middleweight ...

Former heavyweight champion George Foreman, who lost to Muhammad Ali in boxing's iconic 1974 "Rumble ... the 19-year-old Foreman bludgeoned his way to the super-heavyweight gold.

Rather than being handed out, the heavyweight crown is usually taken, and more often than not, by an American. These fighters made headlines, shook nations, and turned boxing into a global spectacle.

A look at Muhammad Ali, a three-time heavyweight boxing champion called "The Greatest." Ali's pro career was from 1960-81 and he died in 2016 at 74. Check out our draft rankings for the relief ...