Shane van Gisbergen won his second race of the season when he won Sunday’s street race in Chicago after starting on the pole.
It comes a day after he won the Xfinity race from the pole on the same 12-turn, 2.2-mile street course.
Meanwhile, the points race tightened.
Ty Gibbs matched his career-best Cup finish by placing second. Tyler Reddick placed third. Denny Hamlin finished fourth and Kyle Busch placed fifth.
Hamlin scored his top-five result after starting at the rear of the field due to an engine change when he had a failure on his first lap of practice Saturday.
AJ Allmendinger was sixth, Ryan Preece placed seventh, Alex Bowman was eighth, Austin Hill finished a career-best ninth in 12 Cup starts and Ross Chastain completed the top 10.
Points leader William Byron’s 40th-place finish tightened the points race.
Four drivers are within 50 points of Byron for the points lead with seven races left in the regular season.
Byron leads Chase Elliott by 13 points, Kyle Larson by 19 points, Hamlin by 43 points and Reddick by 48 points.
Bubba Wallace holds the final playoff spot. Ryan Preece is two points behind him.
