Martin Truex Jr. passed Brad Keselowski with two laps to go and avoided a last-lap wreck that led to a pit-road brawl and left Kyle Busch bloodied in a wild finish to the NASCAR Cup race on Sunday.

An aggressive Joey Logano spun out Busch, sending him spinning down pit road at Las Vegas Motor Speedway.

Moments later, Busch and Logano tangled, with crew members pulling Busch away as blood ran down his forehead.

“There wasn’t much talking, just a lot of swinging,” Logano said. “I was racing hard there at end.”

Busch was pulled up off the ground by crew members and taken to the infield care centre to get his forehead looked at. He was quickly treated and released.

“I got dumped. He flat out just drove straight in the corner and wrecked me,” Busch said. “That’s how Joey races, so he’s going to get it.”

The fight overshadowed a tough-luck finish for Keselowski, who appeared to be pulling away on a restart and on his way to his second win in as many weeks when he ran into mechanical problems.

Truex passed him and held on to become the first driver to win all three segments in NASCAR Cup’s new stage racing.

Kyle Larson was second, followed by Chase Elliott, Logano and Keselowski.