Thirteen drivers have clinched a spot in the Cup Series Playoffs - Martin Truex Jr., Denny Hamlin, William Byron, Christopher Bell, Kyle Larson, Ross Chastain, Ryan Blaney, Chris Buescher, Kyle Busch, Tyler Reddick, Joey Logano, Michael McDowell and Ricky Stenhouse Jr. With only three open spots in the 16-driver field, the competition promises to be intense.