Kyle Busch led a Joe Gibbs Racing sweep of the top four spots in the first practice session for the 60th Daytona 500.
Busch’s No. 18 Toyota put up a top speed of 199.743 mph.
The JGR cars jumped to the top of the standings when they began drafting together late in the session.
Ricky Stenhouse Jr. was the fastest Ford driver at 195.389 mph. He was eighth on the speed chart.
A.J. Allmendinger recorded the most laps in the session with 16.
He and William Byron were the only driver to make 10-lap runs.
BK Racing’s No. 23 Toyota, which will be driven by Gray Gaulding, was the only car not to make a lap in the session.
The red flag was out for a lengthy stretch in the middle of the session to clean up fluids on the track. It was lifted with 13 minutes left in the session.
Saturday’s second Daytona 500 practice is scheduled for 3-3:55 p.m. ET