Top Rank, Inc. is a Paradise, Nevada based boxing promotion company operated by Bob Arum. Since its founding, the company has promoted several world class fighters, such as Muhammad Ali, Alexis Argüello, Oscar De La Hoya, Roberto Durán, Joe Frazier, George Foreman, Marvin Hagler, Manny Pacquiao, Sugar Ray Leonard, Floyd Mayweather Jr., Erik Morales, Thomas Hearns and many more great fighters. 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.