Entry List : Texas Motor Speedway
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- Texas Motor Speedway
- 15th Annual O'Reilly Auto Parts 300
- Pole Winner: Tyler Reddick
- Age: 23
- Team : No. 2 - Alsco Chevrolet
- Owner: Richard Childress
- Crew Chief: Randall Burnett
- Tyler Reddick won the Pole Award for the 15th Annual O'Reilly Auto Parts 300 with a lap of 28.316 seconds, 190.705 mph.
- This is his sixth pole in 82 NASCAR Xfinity Series races.
- This is his fourth pole and 26th top-10 start in 2019.
- This is his first pole in five races at Texas Motor Speedway.
- Harrison Burton (second) posted his sixth top-10 start of 2019 and his first in one race at Texas Motor Speedway.
- Christopher Bell (third) posted his fourth top-10 start at Texas Motor Speedway. It is his 28th in 31 races this season.
- Chase Briscoe (fifth) was the fastest qualifying rookie.
- Drivers Entered: 38
- Laps Scheduled: 200
- Margin of Victory: 05.561 Seconds
- Time of Race: 2 Hours 34 Minutes 27 Seconds
- Average Speed: 116.543
- Cautions: 9 for 51 laps
- Lead Changes: 9
- Green Flag Passes: 861 (5.8 passes per green flag lap)
- Texas Motor Speedway
- 15th Annual O'Reilly Auto Parts 300
- Race Winner: Christopher Bell
- Age: 24
- Team : No. 20 - Rheem Toyota
- Owner: Joe Gibbs
- Crew Chief: Jason Ratcliff
- Christopher Bell won the 15th Annual O'Reilly Auto Parts 300, his 16th victory in 72 Xfinity Series races.
- This is his eighth victory and 20th top-10 finish in 2019.
- This is his first victory and fourth top-10 finish in five races at Texas Motor Speedway.
- Ross Chastain (second) posted his first top-10 finish in ten races at Texas Motor Speedway. It is his fifth top-10 finish in 2019.
- Austin Cindric (third) posted his third top-10 finish in four races at Texas Motor Speedway.
- John Hunter Nemechek (fifth) was the highest finishing rookie.
- Christopher Bell leads the point standings by 31 points over Cole Custer.
