After posting the quickest lap in opening Truck Series practice Friday morning at Homestead-Miami Speedway, William Byron was also fastest in final practice.
Byron posted a lap of 171.778 mph during the 55-minute session. His Kyle Busch Motorsports teammate, Daniel Suarez, was second fastest at 169.083 mph. Cole Custer (168.797 mph) was third fastest with Brady Boswell, substituting for John Wes Townley, fourth fastest at 168.403.
Chase contender Christopher Bell rounded out the top five at 168.340 mph. Bell was the only Chase driver in the top 10.
Two-time champion Matt Crafton was 15th fastest with a lap of 167.110 mph. Timothy Peters was 18th on the practice board with a lap of 166.631 mph. Johnny Sauter was the slowest of the Chase contenders at 23rd fastest with a lap of 165.042 mph.
Click here to see speeds from final Truck Series practice
John Wes Townley has not been medically cleared to drive after suffering what the team calls a “possible concussion” and will miss his second consecutive NASCAR Camping World Truck Series, a team spokesman confirmed to NBC Sports.
Brady Boswell, 19, will drive Townley’s Athenian Motorsports ride in Wednesday night’s race at Eldroa Speedway, as Catchfence.com first reported. NASCAR on NBC analyst Parker Kligerman will drive for Townley in Friday night’s ARCA Sioux Chief PowerPEX 200 presented by Jive at Lucas Oil Raceway.
Townley is scheduled to be re-evaluated July 25. According to a team release, Townley anticipates gaining medial clearance to return to competition then.
Townley missed the July 7 Truck series race at Kentucky because of the injury. He had competed in 40 consecutive Camping World Truck Series races, dating back to 2014, before missing that event. Parker Kligerman drove for Townley at Kentucky.
Townley last drove in the June 25 Truck race at Gateway Motorsports Park. He was involved in two incidents with Spencer Gallagher. The second accident ended with them fighting. NASCAR confirmed that Townley was treated and released from the track’s care center after the second crash.
After Eldora, the series next races July 30 at Pocono Raceway.