Liston failed to answer the bell for the seventh round, and Ali was declared the winner by technical knockout. At that point, the fight was scored as even on the official scorecards. It was the first time since 1919—when Jack Dempsey defeated Jess Willard—that a world heavyweight champion had quit on his stool. Liston said he quit because of a shoulder injury. Dr. Alexander Robbins, chief physician for the Miami Beach Boxing Commission, diagnosed Liston with a torn tendon in his left shoulder. However, David Remnick, for his book "King of the World: Muhammad Ali and the Rise of an American Hero", interviewed one of Liston's cornermen, who told him that Liston could have continued: "shoulder was all BS. We had a return bout clause with Clay, but if you say your guy just quit, who is gonna get a return bout? We cooked up that shoulder thing on the spot." Hall of Fame matchmaker Teddy Brenner also disputed the shoulder injury, claiming he saw Liston use the same arm to throw a chair in his dressing room after the match.