Denny Hamlin has crashed in Sprint Cup practice at Watkins Glen International.
Hamlin's No. 11 Toyota slammed into the guard rail that lines the 2.45-mile road course only seconds after Patrick Long's Toyota blew an engine, his No. 30 spewing oil on the track and kicking up grass as it came to a stop.
Jeff Burton then hit the back of Hamlin. There was left front damage and more damage across the entire back of Hamlin's car. That forced Hamlin to go to a backup car, but he had to go back to the garage when that car began leaking oil after practice resumed.
Burton also had to go to a backup car and was 29th fastest. Hamlin, eighth in the points standings, was 23rd.
Qualifying is Saturday morning.