Sprint Cup Series

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Crew members cover the cars during a weather delay during the NASCAR Sprint Cup series auto race at Bristol Motor Speedway on Sunday, March 16, 2014, in Bristol, Tenn. (AP Photo/Wade Payne)

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Dryer's make their way around the track prior to the NASCAR Sprint Cup series auto race at Bristol Motor Speedway on Sunday, March 16, 2014, in Bristol, Tenn. (AP Photo/Wade Payne)

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Driver Denny Hamlin (11) leads Tony Stewart (14) as he makes his way around the track during practice for the NASCAR Sprint Cup series auto race at Bristol Motor Speedway on Saturday, March 15, 2000, in Bristol, Tenn. (AP Photo/Wade Payne)

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Driver Denny Hamlin (11) makes his way around the track during practice for the NASCAR Sprint Cup series auto race at Bristol Motor Speedway on Saturday, March 15, 2000, in Bristol, Tenn. (AP Photo/Wade Payne)

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Driver Paul Menard (27) leads Kurt Busch (41) during practice for the NASCAR Sprint Cup series auto race at Bristol Motor Speedway on Friday, March 14, 2014, in Bristol, Tenn. (AP Photo/Wade Payne)

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Driver Kyle Busch (18) waits during practice for the NASCAR Sprint Cup series auto race at Bristol Motor Speedway on Friday, March 14, 2014, in Bristol, Tenn. (AP Photo/Wade Payne)

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Driver Danica Patrick (10) rolls down pit road after hitting the wall during practice for the NASCAR Sprint Cup series auto race at Bristol Motor Speedway on Friday, March 14, 2014, in Bristol, Tenn. (AP Photo/Wade Payne)