Entry List : Auto Club Speedway
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- Auto Club Speedway
- 21st Annual Production Alliance Group 300
- Pole Winner: Tyler Reddick
- Age: 23
- Team : No. 2 - Hurdl Chevrolet
- Owner: Richard Childress
- Crew Chief: Randall Burnett
- Tyler Reddick won the Pole Award for the 21st Annual Production Alliance Group 300 with a lap of 40.031 seconds, 179.861 mph.
- This is his fourth pole in 56 NASCAR Xfinity Series races.
- This is his second pole and third top-10 start in 2019.
- This is his first pole in two races at Auto Club Speedway.
- Kyle Busch (second) posted his third top-10 start of 2019 and his 13th in 19 races at Auto Club Speedway.
- Cole Custer (third) posted his third top-10 start at Auto Club Speedway. It is his fourth in five races this season.
- Noah Gragson (fifth) was the fastest qualifying rookie.
- Drivers Entered: 37
- Laps Scheduled: 150
- Margin of Victory: 01.927 Seconds
- Time of Race: 2 Hours 17 Minutes 43 Seconds
- Average Speed: 130.703
- Cautions: 5 for 28 laps
- Lead Changes: 13
- Green Flag Passes: 805 (6.6 passes per green flag lap)
- Auto Club Speedway
- 21st Annual Production Alliance Group 300
- Race Winner: Cole Custer
- Age: 21
- Team : No. 00 - Thompson Pipe/Haas CNC Ford
- Owner: Gene Haas
- Crew Chief: Mike Shiplett
- Cole Custer won the 21st Annual Production Alliance Group 300, his third victory in 76 Xfinity Series races.
- This is his first victory and fourth top-10 finish in 2019.
- This is his first victory and second top-10 finish in three races at Auto Club Speedway.
- Kyle Busch (second) posted his 16th top-10 finish in 19 races at Auto Club Speedway. It is his third top-10 finish in 2019.
- Christopher Bell (third) posted his first top-10 finish in two races at Auto Club Speedway.
- Chase Briscoe (fifth) was the highest finishing rookie.
- Tyler Reddick leads the point standings by 7 points over Cole Custer.
