Bob Arum on Ali's GOAT-ness, Hagler-Hearns, Evel Knievel, and Battling Don King | The Bill Simmons Podcast (Ep. 483)

HBO and The Ringer's Bill Simmons is joined by legendary boxing promoter Bob Arum to discuss his unorthodox start in boxing, some incredible stories about Muhammad Ali, Elijah Muhammad, Marvin Hagler, Sugar Ray Leonard, Roberto Durán, Don K…