Chris Buescher was fastest in Saturday’s first Cup practice session at ISM Raceway, posting a top speed of 137.973 mph around the 1-mile track.
He recorded 28 laps in the session.
“Phoenix is a tough place for me, so I can’t thank this team enough for putting in the work to come here and unload with something that’s been fast,” Buescher told Fox Sports 1. “We’ve got speed in this thing. The long run is showing pretty good as well. Got to make it last a little bit longer. We’re hitting our 10th lap and starting to tail off more than we want to.”
The JTG Daugherty Racing driver will start 22nd in Sunday’s race. His teammate, rookie Ryan Preece, was 31st fastest in the session at 134.933 mph.
Busch had the best 10-lap average at 137.026 mph.