Erik Jones posted the fastest lap just moments before Friday morning’s Xfinity Series practice ended at Dover International Speedway.
The session featured three accidents that caused each team to go to a backup car.
Darrell Wallace Jr. hit the wall in the opening minutes of practice and went to a backup car. About 10 minutes later, Jeb Burton‘s car snapped around off Turn 4 and his car slid head-on into the inside wall on the frontstretch. He also had to go to a backup car.
Paul Menard appeared to have something fail, sending him up the track and into the Turn 3 wall less than 30 minutes into the session. He went to a backup car.