Backup Cars for Byron and Larson

Erik Jones zoomed to the top of Saturday’s practice leaderboard at New Hampshire Motor Speedway, clocking a best lap of 133.427 mph around the 1.058-mile oval.

The driver of the No. 20 Joe Gibbs Racing Toyota will be looking for his first win of the season Sunday in the Foxwoods Resort Casino 301 (3 p.m. ET, NBCSN/NBC Sports App, PRN, SiriusXM NASCAR Radio). He’ll have to fend off polesitter Brad Keselowski, who had the second-best performance with a fast lap of 133.394 mph. Aric Almirola was third at 133.366 mph, followed by Kyle Busch (133.240 mph) and Ryan Blaney (133.138 mph) rounding out the top five in order.

RELATED: Practice results | Full New Hampshire schedule

Not everyone’s practice went as well.

William Byron hit the wall early on and has to switch to a backup car for any further action. Kyle Larson also clipped the wall immediately after and swapped out cars as he had front and right rear damage.

That means five teams will be driving a backup car for the rest of the weekend: Byron, Larson, Denny Hamlin, Ryan Newman and Alex Bowman.

RELATED: Recap of Friday’s practice — backup cars for Newman and Hamlin

Final practice is at 12:35 p.m. ET with coverage on NBCSN/NBC Sports App. The No. 12 Team Penske Ford of Ryan Blaney, the No. 21 Wood Brothers Racing Ford of Paul Menard, No. 37 JTG Daugherty Racing Chevrolet of Chris Buescher and the No. 00 StarCom Racing Chevrolet of Landon Cassill will all serve 15 minute penalties for being late to inspection. Daniel Hemric’s No. 8 Richard Childress Racing Chevrolet failed inspection twice, so his team will be docked 15 minutes of practice time.