NASCAR Sprint Cup driver Kyle Busch, left, talks with Chad Knaus, prior to practice at Martinsville Speedway in Martinsville, Va., Friday March 28, 2014. (AP Photo/Mike McCarn)
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NASCAR Sprint Cup driver Kyle Busch, left, talks with Chad Knaus, prior to practice at Martinsville Speedway in Martinsville, Va., Friday March 28, 2014. (AP Photo/Mike McCarn)
