Erik Jones was fastest in the final practice session for the Xfinity Series race at Chicagoland Speedway.
Jones and his No. 20 Toyota posted a top speed of 173.310 mph during his 28 laps around the 1.5-mile track.
Jones was followed by Spencer Gallagher (172.381), Daniel Suarez (172.320), Cole Custer (172.276) and Ryan Blaney (172.249).
Brennan Poole, ninth fastest, recorded the most laps in the session with 41.
Darrell Wallace Jr. was 20th fastest, just as he was in the first session.
The session was stopped once for Matt Mills getting into the wall in Turn 1.