Joe Gibbs Racing’s Erik Jones was fastest in Saturday’s first Monster Energy NASCAR Cup Series practice at Michigan, which saw fog shorten the session from 55 minutes to about 15.
After about a 40-minute fog delay, the Michigan native ran a lap of 200.150mph, 0.085s better than William Byron’s 199.678mph. Brad Keselowski (199.358mph), Clint Bowyer (199.242mph) and Joey Logano (198.999mph) rounded out the top five.
Polesitter Denny Hamlin, who topped Friday’s only practice and swept all rounds of qualifying, was ninth quickest (198.840mph).
Several teams served 15-minute penalties for various infractions. Bubba Wallace and the No. 51 Rick Ware Racing Ford of B.J. McLeod were penalized for being late to Michigan pre-qualifying inspection, while the other penalties were holdovers from Watkins Glen; Martin Truex Jr. was penalized for being late to pre-race inspection and Daniel Suarez, Kyle Busch and Ryan Newman served time for failing to come to a complete stop at the Glen’s inner loop in practice.
Michael McDowell will be held for 15 minutes in the final practice for failing Michigan pre-qualifying inspection twice.
NEXT UP: Final practice at 11:15 a.m. ET.