There were a couple of incidents during the first practice session at Sonoma earlier today.

Photo Credit: Rusty Jarrett/Getty Images for NASCAR

David Gilliland ran into the back of John Andretti at the end of pit road. There was some damage done to the back of Andretti’s car, but Gilliland will have to go to a back-up.

Marcos Ambrose’s engine blew in his #47 ride about 15 minutes into the first practice. After qualifying 3rd, his best qualifying effort, Ambrose will now have to start the race in the back of the field. He posted the fastest speed during that practice session.

First Practice:

1.Marcos Ambrose 92.490
2.Juan Pablo Montoya 92.293
3.Clint Bowyer 92.144
4.Jamie McMurray 92.123
5.Robby Gordon 92.085

Happy Hour Practice:
1. AJ Allmendinger 92.525
2. Ron Fellows 92.480
3. Robby Gordon 92.348
4. Juan Pablo Montoya 92.307
5. Kasey Kahne 92.220