 Muhammad Ali had several fights on early pay-per-view home television, including Cassius Clay vs. Doug Jones in 1963, and Muhammad Ali vs. Sonny Liston which drew 250,000 buys on cable television in 1964.Professional boxing was largely introduced to pay-per-view cable television with the "Thrilla in Manila" fight between Muhammad Ali and Joe Frazier in September 1975.The fight sold 500,000 pay-per-view buys on HBO.