SONOMA, Calif. - Tony Stewart again finds himself in the middle of controversy, this time involved in an alleged physical confrontation with rookie Brian Vickers. Following Sunday's Dodge/Save Mart 350 at Infineon Raceway, Stewart brought his No. 20 Chevrolet to a rest on pit road, exited his car and hurried quickly to Vicker's car. Witnesses said the two engaged in what appeared to be an amicable conversation at first, with Stewart leaning over the driver's-side window of Vicker's car. After a few moments, Stewart became quite animated, began reaching into the car and tried to pull Vickers out, witnesses said....