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17-year-old Smith was fastest in the first Truck Series practice, driving the No. 46 for Kyle Busch Motorsports. Smith turned 30 circuits around ISM Raceway and had the best lap at an average of 133.740 mph. Stewart Friesen was close by with a speed of 133.655 mph. The top five was rounded out by Tyler Ankrum (133.294 mph), Brett Moffitt (133.249 mph), and Burton (133.033 mph).
Smith’s Toyota Tundra was fastest in a 10 consecutive lap average over Ty Majeski and Austin Hill at 130.800 mph. Majeski, driving the No. 44 for Niece Motorsports, averaged 130.571 mph, and Hill averaged 130.184 mph.
Ross Chastain was 22nd and slowest among the six playoff drivers (130.890 mph).
Smith and Carson Ware spun in separate incidents, which brought out the yellow flag during the first practice. Both continued without any major damage.
Burton edged his way to the top of the leaderboard in the second and final Truck Series practice of the morning. Burton’s lap at 133.492 mph was clocked in during a flurry of mock qualifying runs towards the end of the session.
Smith was second quickest at 133.427 mph, and third was Friesen with a speed of 133.264 mph. Hill (133.190 mph) and Brandon Jones (133.116 mph) closed out the top five.
Austin Wayne Self was the only driver to turn 10 consecutive laps, which he averaged a speed of 128.235 mph.
Chastain, who was in the top five early, ended up 15th in the final practice session (131.560 mph) and was the slowest playoff driver.
Majeski was the only driver to not take part in the session. The Niece Motorsports team was forced to change the engine in the Plan B Sales Chevrolet after the opening session. As a result, Majeski will have to start the Lucas Oil 150 from the rear.
There were no on-track incidents during the final practice session. A truck stalling on pit road caused the only yellow flag of the session.
Qualifying is today at 5:05 p.m. ET, followed by the race at 8:30 p.m. ET. Both qualifying and the race will be televised live on FOX Sports 1.
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