Final four drivers chase NASCAR Sprint Cup championship

After 35 races (not including exhibitions), the battle for the 2015 NASCAR Sprint Cup Series championship comes down to four drivers: the reigning champion (Kevin Harvick), the legend (Jeff Gordon), the comeback kid (Kyle Busch) and the underdog (Martin Truex Jr.).

Gordon is seeking his fifth title before retiring from full-time Cup racing, Harvick will be racing for his second, while Busch and Truex are hoping to celebrate a championship for the first time.