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Tyson announces retirement after quitting vs. McBride By Chuck Johnson, USA TODAY WASHINGTON  Former two-time heavyweight champion Mike Tyson says he will never fight again after losing Saturday night to unheralded Kevin McBride on a sixth-round technical knockout. An exhausted Mike Tyson lies on the canvas at the conclusion of the sixth round. Tyson did not answer the bell for round seven. By Pablo Martinez Monsivais, AP "I don't have the guts to stay in this sport anymore," said Tyson, who quit on his stool from exhaustion as the bell sounded for the seventh round. "I don't want to disrespect the sport that I love. My heart is not into this anymore. I'm sorry for the fans who paid for this. I wish I could have done better, but it's time to move on with my life and be a father and take care of my children." (Related item: Tyson over the years) McBride, who vowed to prove he's a legitimate title contender, withstood some vicious body shots, an intentional head butt and other desperate measures by Tyson to pull of the upset before a 15,472 fans at the MCI Center. "This win was for the pride of Ireland," said McBride, who lifted his record to 33-4-1 with his 28th knockout. "I proved everyone wrong tonight." McBride used his 6-6, 271 pound frame to muscle the former champion who was outweighed by 38 pounds and gave away seven inches in height. McBride, whose $150,000 purse was dwarfed by the $5 million Tyson that earned, showed he can take a punch and dished out some good ones himself. "Kevin did just what we wanted to do," said McBride's trainer Goody Petronelli. "We wanted him to use his weight advantage and rough him up. That's how we got the best of him." McBride, who represented Ireland in the 1992 Barcelona Olympics, brought his country's heavyweight title belt into the ring and had a sizable number of fans among the crowd of mostly Tyson partisans. "I appreciate the support," said McBride, who hopes to fight WBC champion Vitali Klitschko. "This victory moves me closer to my goal to become the first Irish-born heavyweight champion of the world." Tyson, whose record dropped to 50-6 with his third KO defeat in his last four fights, unloaded malicious shots to McBride's mid-section through the first five rounds. But he clearly was running out of gas as the fight went on and resorted to a deliberate head butt, which opened a gash over McBride's left eye in the sixth round and cost him a two-point deduction from referee Joe Cortez. "Shoot, I was desperate," Tyson said. "I wanted to win." McBride said the ex-champion apparently wanted to win so badly that he bit his nipple and tried to break his arm during a clinch. "He's a warrior," the forgiving winner said at the post-fight press conference. Even with the deduction, Tyson led 57-55 on two of the judges' scorecards while the third judge had McBride leading 57-55. Cortez said he never gave consideration to stopping the fight, although McBride was bleeding profusely from the gash over the eye. Once McBride was checked by ringside physician and cleared to resume fighting, he came out from the delay with a solid upper-cut to Tyson's chin. Tyson, 38, ended the sixth round by slinking to the canvas after he was pushed by McBride. He sat on his backside against the ropes — put there not by a punch but from sheer exhaustion. Tyson looked spent as he ambled to his corner. Moments later, the crowd gasped in shock and then booed when the former champion, at the suggestion of trainer Jeff Fenech, quit on his stool, his legs and what was left of his once invincible boxing career gone. "If he had continued, there was a good chance Mike could have been hurt," Fenech said. "He knew he was done."