DOVER, Del. — Kyle Larson was the fastest in Friday morning’s opening Xfinity practice at Dover International Speedway after a lap of 154.540 mph.
He was followed by Matt Tifft (154.361 mph), Ryan Blaney (154.030), Daniel Suarez (153.721) and Elliott Sadler (153.669).
Both Joey Gase and Spencer Gallagher went to a backup car after an accident late in the session.