This is Aaron Rodgers skipping the Super Bowl, Roy Halladay passing on the World Series. An elite professional athlete doesn’t do what Nick Diaz did, not on the precipice of what could have been the greatest night of his professional life. UFC president Dana White made the dramatic move Wednesday to yank Diaz from a welterweight championship bout against Georges St. Pierre that would have topped the card at UFC 137 on Oct. 29 at the Mandalay Bay Events Center in Las Vegas about 10 minutes before a bizarre news conference began in the deserted arena. Nick Diaz is known for his wild fighting style in the cage. But he's even better known for his unpredictability outside it. White opened the news conference by recounting the chain of events of the last several days. He noted how Diaz missed two flights to Toronto, another to Las Vegas and how he couldn’t be certain Diaz would show up for the fight. Only moments before White and St. Pierre walked on stage, White pulled