Kyle Busch pulled off an unlikely win Sunday in the Auto Club 400 in Southern California to secure his 200th career victory across NASCAR's three major series.
After starting fourth, Bush swept the first and second stages and led for a race-high 134 laps, but a costly penalty saw him fall from the top spot to the bottom of the pack.
He received a penalty for speeding off the pit road to start Stage 3, which initially gave Brad Keselowski the lead.
Busch came off the restart in 18th place and quickly fought to retake the lead. He held off Joey Logano and Keselowski down the stretch, while Kevin Harvick and Ryan Blaney rounded out the top five.
Busch was on the verge of reaching that feat in Saturday's Xfinity Series race at Auto Club Speedway, but a late pit-road penalty ended his hopes. He ended up finishing second after leading a race-high 98 laps. His first career Cup win came in Fontana, which made Sunday's victory even more fitting.
Ricky Stenhouse Jr. was in the mix to start the race, but he spun out early in Stage 1.