Rookie Chase Briscoe was fastest in the first Camping World Truck Series practice at Chicagoland Speedway.
The Brad Keselowski Racing driver posted a top speed of 175.296 mph around the 1.5-mile track.
Briscoe recorded 17 laps in the first of two 55-minute practice sessions for the regular-season finale.
The top five in the session were Briscoe, Johnny Sauter (175.194), Christopher Bell (174.357), Noah Gragson (174.132) and Ryan Truex (173.656).
Justin Fontaine recorded the most laps with 22.
No driver recorded 10 consecutive laps in the session.
The second practice session is scheduled for tonight at 6:30 p.m. ET.
Click here for the full practice report.