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 two road courses on the Sprint Cup circuit.
"To get a road-course win, it's a big check mark on my list," Busch said. "It's just really neat to bring home that 'W.' "
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 smiled.
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.
"I'm glad I stuck around for practice," said Edwards, who was scheduled to miss both of Saturday's practice sessions so he could be in Wisconsin for that race.
Yesterday'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 he 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-course finish. He also showed some mettle in intentionally moving Robby Gordon out of his way midway through the race.
Defending race winner Jimmie Johnson was seventh, and Martin Truex Jr. came back from an early spin to finish eighth.
Kevin Harvick and Keselowski rounded out the top 10.