LAS VEGAS — Brad Keselowski won the Kobalt 400 NASCAR Sprint Cup Series race Sunday after he passed Kyle Busch with six laps to go in the 267-lap race. It was his second-career win at Las Vegas Motor Speedway.

Keselowski’s Team Penske teammate Joey Logano got by Busch on the final lap to give Penske a one-two finish. Jimmie Johnson also passed Busch on the last lap to finish third after leading a race-high 76 laps. Busch was relegated to fourth by the checkered flag.

Keselowski’s journey to victory lane included a pit-road speeding penalty during a caution that came out on lap 178. He was one of several drivers assessed pit-road speeding penalties throughout the race. Austin Dillon overcame a bad pit stop and a pit-road speeding penalty to round out the top five.

Kurt Busch was the first driver to get caught speeding on pit road. He started on the pole and led the first 32 laps before a pit-road speeding penalty during a competition caution. He recovered to finish ninth.

Matt Kenseth, Keselowski and Logano each led laps before Johnson took over in the middle portion of the race. Johnson took the lead for the first time when he took two tires and got off pit road first during a lap-99 caution. Kenseth retired from the race after wrecking with Chase Elliott with 43 laps to go.

Logano took the lead from Johnson on lap 177. He and Kenseth both led laps before Johnson retook the lead with 57 laps remaining. Johnson gave up the top spot, though, a few laps later by pitting under caution while Logano, Keselowski and Dillon stayed out. Busch, among those who pitted, was quick to get by all three and others in the first lap after the restart to take the lead.

On Saturday, Kyle Busch finally broke his home-court jinx at Las Vegas Motor Speedway and he did it in style.

Leading 199 of 200 laps, Busch won the Boyd Gaming 300 NASCAR Xfinity Series race at the 1.5-mile track, pacing a 1-2-3 finish by Joe Gibbs Racing.

The Las Vegas native ended an 0-for-11 drought at his home track, beating teammate Daniel Suarez to the finish line by .817 of a second, with Erik Jones rolling across the stripe in third.

The victory was Busch’s second straight in as many starts this season and the 78th of his career, extending his series record.

As dominant as the statistics might have appeared, however, Busch’s win was anything but easy.

Suarez was closing fast in the final 20 laps, chopping a lead of nearly three seconds to less than one. And Jones likely had the fastest car in the race, but back-to-back green-flag pit road speeding penalties squelched his chances for victory.

NOTES: The Kobalt 400 was the first of three-consecutive races that make up NASCAR’s West Coast swing. … Kevin Harvick won the 2015 Kobalt 400. He battled the flu in the week leading up to this year’s race and finished seventh. … Kurt Busch’s pole-winning run on Friday set a track qualifying record. It was his second straight pole, as he also was the pole-sitter a week ago at Atlanta Motor Speedway. … For the second week in a row, the Sprint Cup race was one car shy of a full field at 39 cars. … Jamie McMurray and Carl Edwards started the race in backup cars after crashes in Friday’s qualifying session. McMurray came in 16th, while Edwards finished 18th.