SONOMA, Calif. (AP) _ His broken right shoulder blade is getting to be a sore subject for Tony Stewart.

``This is the last time we're going to answer this,'' he said Thursday when the topic came up as he talked with reporters at Infineon Raceway in advance of Sunday's Dodge/Save Mart 350. ``It's 100 per cent.''

Stewart, who won last year at Infineon, was injured in two hard crashes last month at Lowe's Motor Speedway. He hit the wall in a Busch Series race and went to the hospital to have his right shoulder examined, then was in a second accident during the Nextel Cup race the following night that sent him back for further tests.

The defending Cup champion slammed the wall again last week at Michigan after being tapped from behind by Jeff Green, but came away unscathed, although he wound up parking his car after extensive repairs failed to make it competitive.

``It was 95 per cent at Michigan,'' Stewart said.

He raced only 37 laps in Dover, Del., three weeks ago before giving way to relief driver Ricky Rudd. Two weeks ago at Pocono, he drove the No. 20 Joe Gibbs Racing Chevrolet to a third-place finish.

Stewart conceded that Sunday's 110-lap race around Infineon's hilly 1.99-mile road course will put demands on the shoulder that Pocono and Michigan did not.

``I even tried to make it hurt this week, but it feels fine,'' he said. ``I guess my parents taught me a long time ago when I was little, if you're going to be dumb, you better be tough.

``I guess I've done both.''

Stewart's 41st-place finish at Michigan dropped him to sixth in the season standings, trailing leader Jimmie Johnson by 267 points.