Pole-sitter Joey Logano was involved in a three-car accident during the first of two practice sessions Saturday, switched to a backup car, and will start from the rear of the field Sunday. That will move Brad Keselowski, who had qualified third, to the front when the green flag drops Sunday. The race at Homestead-Miami Speedway is the finale of the NASCAR Chase for the Sprint Cup Championship, and Keselowski only needs to finish 15th to win the title.
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