Hamlin posted a speed of 95.256 mph in the session that was delayed a half hour for track drying.
The Joe Gibbs Racing driver was followed by Kyle Busch (95.060 mph), Kyle Larson (94.970) and Ryan Newman (94.908). Jamie McMurray and Clint Bowyer tied for fifth at 94.889 mph.
Joey Logano had the top 10-lap averages at 94.749 mph.
Daniel Suarez will go to a backup car after the rookie wrecked late in the session. Suarez told Fox Sports 1 “something weird” occurred with his brakes when they locked entering Turn 3, sending his No. 19 backward into outside wall.
Read More Here....NBC Sports
Practice 1 Speeds
|Native Virginian Denny Hamlin has won five times at Martinsville Speedway.|