Cole Custer became the first rookie winner in the NASCAR Cup Series in nearly four years, surging to the lead in a four-wide, final-lap scramble Sunday at Kentucky Speedway. Kevin Harvick and Martin Truex Jr. were dueling side by side for the lead on the final restart when Custer — with a push from Matt DiBenedetto on the outside in the backstretch — made his move in the No. 41 Stewart-Haas Racing Ford. As the leaders bunched in Turn 1, Custer slid ahead and outlasted Truex’s Toyota. The victory was the first by a series rookie since Chris Buescher at Pocono on Aug. 1, 2016. Making his 20th series start, the 22-year-old Custer celebrated with a frontstretch burnout as his crew happily ran to greet him. DiBenedetto was third, and Harvick fourth.