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Mike Tyson says he will quit the ring for good after retiring on his stool before the seventh round of his latest comeback attempt against unknown Irishman Kevin McBride.
Tyson, not seen since his shock loss to Britain's Danny Williams 12 months ago, was expected to dismiss McBride in the early rounds as he embarked on another road to the heavyweight title.
But the former champion tired visibly after a bright start and resorted to head-butting his opponent in the sixth round before being bundled to the canvas, after which he staggered to his stool where the cornermen pulled him out.