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Joe Gibbs Racing‘s Daniel Suarez was first on the speed charts Thursday for a shortened XFINITY Series opening practice at Bristol Motor Speedway. Suarez, who enters the weekend second in points, posted a quickest lap of 126.046 mph in his No. 19 Toyota.
NASCAR called practice a few minutes early due to threats of rain at the Tennessee short track.
After Suarez was Regan Smith in the No. 88 JR Motorsports Chevrolet, earning a fast lap of 125.782 mph.
The No. 18 JGR Toyota of Kyle Busch (125.716 mph), the No. 2 Richard Childress Racing Chevrolet of Austin Dillon (125.330 mph) and the No. 20 JGR Toyota of Erik Jones (125.036 mph) completed the top five.
RCR’s Ty Dillon — making his 100th series start this weekend — was eighth-fastest in his No. 3 Chevy (124.768 mph).
Series points leader Elliott Sadler finished the session 15th (124.018 mph) in the No. 1 JR Motorsports entry.
On-track action for the series was scheduled to pick back up at 3:30 p.m. ET for final practice, but was canceled due to persistent rains hitting the track and surrounding areas.
The field returns Friday for Coors Light Pole Qualifying (NBC Sports App) at 3:15 p.m. ET ahead of the Food City 300 (7:30 p.m. ET, USA, PRN, SiriusXM NASCAR Radio).