SONOMA, Calif. -- It certainly seemed as if Kurt Busch's season was in serious trouble just two months ago, when poor performances led to an intense radio tirade against his entire Penske Racing organization.
What could have destroyed his race team has actually had the opposite effect.
Busch's impressive turnaround continued Sunday with a dominating run at Infineon Raceway, where the Las Vegas native earned his first career road course victory and first Sprint Cup Series win of the season.
"We've been on a great run these last few weeks," Busch said. "To get a road course win, it's a big check mark on my list. It's just really neat to bring home that 'W' "
Busch led a race-high 76 laps and beat Jeff Gordon by almost 4 seconds. It's a marked turn for Busch, who unraveled over his team radio at Richmond in early May because of how poorly his Dodge had been running.
The rant led to behind-the-scenes changes at Penske Racing that have sparked both Busch and teammate Brad Keselowski, who won at Kansas this month. Busch, despite three consecutive poles, had been winless but inching closer and closer.
It finally came on a road course, of all places. Busch was winless in 10 career starts at both Sonoma and Watkins Glen, the only road courses on the Cup circuit. And Busch helped Keselowski finish 10th with advice and a tour of the track on Friday.
"It's a good feeling to know that the two teams are working as closely together as they ever have," Busch said. "Knowing that Brad is definitely maturing, seeing him bust off a top-10 at a road course is great. We went around the race track, I pointed out some of the apex points, exit points, shifting points. He absorbed it like a sponge.
"That's what it takes as a veteran of the team to help the kid that's coming up through and to have his information help us. That's exactly what's helped both teams get stronger."
Beating Gordon made it extra special for Busch, who was one of many drivers wrecked by Gordon here last year. It was fresh in his memory when he arrived, and one of the first things Busch said was Gordon had apologized to every driver he wrecked last year but Busch.
"It was a definite boost at the end of the day, to see him finish second," Busch said with a smile.
Gordon congratulated Busch in Victory Lane, but said "I still didn't apologize."
Carl Edwards, who decided Friday to skip Saturday's Nationwide Series race at Road America, finished third. He was scheduled to miss both of Saturday's practice sessions so he could be in Wisconsin for the race.
"It was very tough to watch the race from Road America, but I think staying was the right decision," Edwards said.
Sunday's race featured several on-track flare-ups, most notably Brian Vickers' payback spin of Tony Stewart.
Stewart knocked Vickers out of his way early in the race, and Vickers gave it right back later. The bump sent Stewart's car spinning into a stack of tires, and the rear of his Chevrolet came to a rest on top of the stack.
Stewart didn't seem angry over the retaliation, but wasn't apologetic, either.
"I probably had it coming, because I dumped him earlier, but I dumped him because he was blocking," Stewart said.
While Stewart was calm, tempers were flaring across the rest of the garage. Juan Pablo Montoya was mad at Keselowski, Kasey Kahne was mad at Montoya, Joey Logano was mad at Robby Gordon and Denny Hamlin was mad at AJ Allmendinger.
"(Seventh) week in a row I've had a winning car and then, boom. We get Dinger'd," Hamlin posted on Twitter immediately after the race.
Hamlin, who led 12 laps and was competitive with Busch, wound up 37th.
"Man, it was nuts out there," Jeff Gordon surmised.
Clint Bowyer finished fourth, Marcos Ambrose was fifth and pole winner Logano was sixth. It was a huge turnaround for Logano, who used coaching from Max Papis to score his career-best road finish. He also showed some mettle in intentionally moving Robby Gordon out of his way midway through the race.
"He drives like a moron every week," Logano said. "We were a lot faster than him. I got outside of him one corner and he knocked in my fender. So I had enough of it. I'm not going to get pushed around; I don't care."