Noah Gragson bumped JR Motorsports teammate Justin Allgaier into the wall with five laps remaining in the Cheddar's 300 on Monday at Bristol (Tenn.) Motor Speedway, then won the NASCAR Xfinity Series event in overtime.
Chase Briscoe finished 0.328 seconds behind Gragson in second place, just ahead of Brandon Jones, Harrison Burton and Myatt Snyder.
Allgaier slipped all the way to 18th place after he made contact with the outside wall, then spun and slid into the inside wall.
Gragson, a 21-year-old Nevada native, earned his second Xfinity win of the season and of his career. He captured the NASCAR Racing Experience 300 at Daytona to open 2020.
Gragson joins Briscoe as the circuit's only two-time winners this year.
The Xfinity event concluded NASCAR's two-day stopover at Bristol, with Brad Keselowski having won the Cup Series' Supermarket Heroes 500 on Sunday.
Six drivers held the lead Monday in an event that saw 10 lead changes and had 12 cautions.
--Field Level Media