RELATED: Full results from practice
Austin Dillon launched atop Friday’s lone practice for the NASCAR XFINITY Series at Texas Motor Speedway.
Dillon, the 2013 series champ who is now a regular in the Sprint Cup Series, pushed the Richard Childress Racing No. 33 Chevrolet to a best lap of 184.363 mph in the two-hour, 25-minute session, the only tuning prep for Saturday’s O’Reilly Auto Parts 300 (3:30 p.m. ET, NBC, PRN, SiriusXM).
Brad Keselowski was second-fastest in the Team Penske No. 22 Ford with a lap of 184.256 mph around the 1.5-mile track. Erik Jones, Regan Smith and Daniel Suarez completed the top five.
Sprint Cup regular Kyle Busch, a seven-time XFINITY Series winner at Texas, was sixth-fastest in the Joe Gibbs Racing No. 54 Toyota.
Series leader Chris Buescher turned the 12th-fastest lap in the Roush Fenway Racing No. 60 Ford. He enters the 31st of 33 races this season with a 27-point edge on defending champ Chase Elliott (10th-fastest), a 33-point cushion on Smith and a 36-point advantage over Ty Dillon (ninth-fastest).
Darrell Wallace Jr. was seventh-fastest in practice, but scraped the right side of his Roush Fenway Racing No. 6 Ford against the Turn 4 wall late in the session.
Coors Light Pole Qualifying for the XFINITY Series is scheduled for Saturday at 12:15 p.m. ET on NBCSN.