Richard Petty upset over driver's fine

CONCORD, N.C. -- Marcos Ambrose says he understands the $25,000 fine NASCAR levied against him for punching Casey Mears in the face.

His car owner is none too pleased with the penalty and thinks the driver shouldn't be fined for defending himself. Richard Petty also says he wants to discuss the penalty with NASCAR officials.

Ambrose and Mears were both punished this week for a post-race altercation at Richmond. Mears was fined $15,000 after he angrily approached Ambrose and shoved the Australian when Ambrose appeared to be walking away. Ambrose replied with a right hand to Mears' face that drew blood near his eye.

Amborse is not appealing and said Thursday he'll pay the fine. Petty says it's ridiculous Ambrose was punished at all.