Grant Enfinger posted a lap of 169.348 mph to score his second pole of the season and third of his career. Both of his previous poles ended in results in the 20s. Enfinger finished 20th at Daytona in February 2016 and 21st this June at Gateway.
He nipped Stewart Friesen (169.215 mph) by .025 seconds.
The four playoff contenders lined up in the next four spots with Noah Gragson (168.803) taking the third position, Justin Haley (168.209) fourth, Brett Moffitt (168.062) fifth and Johnny Sauter (167.541) sixth.
Harrison Burton (165.960), who announced he will race with Kyle Busch Motorsports full time in 2019, qualified 14th.