Busch, who moved from his longtime home at Joe Gibbs Racing to RCR in the offseason, rallied from a pit road speeding penalty early in the race to cruise to victory over Elliott Sunday at Auto Club Speedway.
Busch finally ran down then-leader Ross Chastain on Lap 143 of 200 and maintained his lead through a final round of green-flag pit stops. After Elliott worked his way up to second, the closest he would get to Busch’s No. 8 Chevrolet was the final margin of 2.998 seconds.