NASCAR Cup Series drivers have a vested interest in how NASCAR reacts to the finish of Saturday's Xfinity Series race at Martinsville Speedway. They want to see how NASCAR handles Sammy Smith knocking Taylor Gray out of the way for the lead in the final turn,

A wreck- and caution-filled Xfinity Series at Martinsville drew criticism in the Cup Series garage and put a spotlight on a tricky problem.

In a race that had 15 cautions, Austin Hill survived NASCAR Overtime to secure the Xfinity Series win at Martinsville Speedway.