Claim: Bob Arum is the CEO of a Las Vegas-based company.

Top Rank , Inc. is a boxing promotion company founded by Jabir Herbert Muhammad and Bob Arum . It was incorporated in 1973 and is based in Las Vegas , Nevada .   Since its founding , Top Rank has promoted many world class fighters , including Muhammad Ali , Alexis Argüello , Oscar De La Hoya , Roberto Durán , Joe Frazier , George Foreman , Marvin Hagler , Juan Manuel Marquez , Manny Pacquiao , Sugar Ray Leonard , Floyd Mayweather Jr. , Erik Morales , Thomas Hearns , Paulie Ayala , Iran Barkley , Michael Carbajal , Larry Holmes , Ray Mancini , Carlos Monzón , Terry Norris , Gabriel Ruelas , Rafael Ruelas , and James Toney .   The company has promoted such superfights as Hagler vs Leonard , Chavez vs De La Hoya , Holyfield vs Foreman , Foreman vs Moorer , Leonard vs Hearns , Hagler vs Hearns , Ali vs Frazier II and both Ali vs Spinks fights . The company also promoted George Foreman 's comeback to regain the world championship , culminating in the knockout of then IBF/WBA champion Michael Moorer on November 5 , 1994 .