KANSAS CITY, Kan. — The dozen drivers who advanced to the second round of the NASCAR Cup Series playoffs saw Kansas Speedway as a relatively straightforward test, given the potential chaos looming at Talladega and the unpredictability of the road course at Charlotte. For most of them, it turned out to be a test of survival.

Ross Chastain took the lead from Martin Truex Jr. on a late restart and won the NASCAR Cup Series race at Kansas Speedway on Sunday.

The Xfinity Series playoffs begins Saturday, while Cup teams prepare for the start of the second round of its playoffs.