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Kobalt Tools 400

LAS VEGAS, NV - MARCH 11: Denny Hamlin, driver of the #11 FedEx Freight Toyota, leads a group of cars during the NASCAR Sprint Cup Series Kobalt Tools 400 at Las Vegas Motor Speedway on March 11, 2012 in Las Vegas, Nevada. (Photo by Ronald Martinez/Getty Images for NASCAR)

NASCAR: Kobalt Tools 400

All the action from the Kobalt Tools 400 in Las Vegas.