The 2019 O'Reilly Auto Parts 300 is a NASCAR Xfinity Series race held on November 2, 2019, at Texas Motor Speedway in Fort Worth, Texas. Contested over 200 laps on the 1.5-mile (2.4 km) asphalt speedway, it was the 31st race of the 2019 NASCAR Xfinity Series season, fifth race of the Playoffs, and the second race of the Round of 8.

Tyler George Reddick is an American professional stock car racing driver. He competes full-time in the NASCAR Cup Series, driving the No. 45 Toyota Camry XSE for 23XI Racing. He is a two-time champion in the NASCAR Xfinity Series, winning consecutive titles in 2018 and 2019. Reddick was the victor in the closest finish in NASCAR's top three series, edging out Elliott Sadler at Daytona International Speedway during the 2018 Xfinity Series season when he won by 0.0004 seconds.