The championship contenders said Talladega Superspeedway would be the wild-card race in the Chase for the Sprint Cup. That was an understatement. Talladega delivered yet another “big one” Sunday, when defending NASCAR champion Tony Stewart triggered a 25-car pileup as he tried to protect the lead. His bid to block a long line of traffic on the last lap backfired, and his car was sent sailing through the air in a chaotic crash that collected 10 of the 12 title contenders. GameTimeGirl