(AP Photo/Wade Payne)

Kurt Busch was scheduled to start on the outside of the front row at Bristol next his brother Kyle.

Now he'll start at the back of the field.

Busch crashed his No. 41 Ford late in the final practice in turn three, forcing him to go to a backup car for Sunday's race. Under NASCAR rules, he will need to start at the back of the field. Busch apologized to his crew chief after the crash, which came at the end of a long run on worn down tires.

“I had 45 laps on the tires and was trying to get to 50," Busch said. "The setup changes dramatically with air-pressure builds and the VHT changing, so I was just trying to do as much research as I could.  The lap times were really good in the car and then, boom, there’s just no forgiveness right now with how many variables there are.”

Busch said he is optimistic things will go his way and he still has a chance.

"We have a fast setup, we just have to adjust to the VHT changing conditions and the air-pressure builds and a Monday set of temperatures," Busch said. "There’s still so much up in the air right now that it doesn’t really matter where you start.”


Busch had said he was looking forward to starting the race alongisde his brother.