By JENNA FRYER
AP Auto Racing Writer
HOMESTEAD, Fla. (AP) - Brad Keselowski didn't dare take his phone in his car before the biggest race of his life. NASCAR's social media champion handed it over before pulling on his helmet and chasing the Sprint Cup title he promised to deliver to Roger Penske.
But when Sunday's race ended, Keselowski crossing the finish line at Homestead-Miami Speedway as the champion, he didn't even consider getting out of his car to celebrate before getting that phone back.
Why? He had to tweet, of course.
Keselowski, the kid you first heard about when he tweeted from inside his car during the season-opening Daytona 500, opened his championship reign by tweeting from inside his car: "We did it," he posted with a picture.
He did it with Penske, forming NASCAR's oddest couple to capture its biggest prize.
Keselowski brought Penske his first Sprint Cup championship 40 years after his first stock car race, beating five-time champion Jimmie Johnson of mighty Hendrick Motorsports while delivering the crown that fills a glaring hole on Penske's otherwise sterling racing resume.
Penske is considered the gold standard of open-wheel racing _ he has 15 Indianapolis 500 wins _ and his empire makes him one of the most successful businessmen in America. But until Sunday night at Homestead-Miami Speedway, his NASCAR program was never more than average.
"Personally, I feel amazing that I've been able to achieve this in racing," Penske said. "I think it took guts for me to stay in the sport. We could have thought, `Well, we won the Indy 500 15 times and we're a big deal.' But I'll tell you one thing ... I think I just woke up here tonight, and it's a big thrill."
As always, Penske credited the entire program.
But the program really turned behind Keselowski, a blue collar, Michigan native, who chugged sponsor Miller Lite's product, donned goggles to douse the Blue Deuce crew with champagne, and imagined how his life will change as NASCAR's champion. At 28, he's the eighth youngest champion in NASCAR history and proud he doesn't have a date for the Nov. 30 champions banquet in Las Vegas.
"I've always wanted to date a celebrity," said Keselowski, "I'm just throwing that out there. That would be really cool, don't you think?"
Penske could only shake his head in bewilderment.
"Maybe I am conservative, but I like to have a little fun, too," Penske said. "And I think when you've won the NASCAR championship, the driver, you can kind of give him a little wider path, and he's certainly taken it side to side. I think it's all good."
Keselowski might not have seemed like Penske material three years ago, but he's a cornerstone now.
He was a developmental driver for Hendrick Motorsports in 2008 when he went to see Penske, determined that he could be the driver to bring "The Captain" a coveted Cup championship. He wiggled free from his contract a year later, and had a second-tier Nationwide championship _ and a closet full of starched white Penske shirts _ to show for his convictions.
Now, three years into the plan, he and Penske have that Cup championship and a connection no one saw coming.
"Always, throughout my whole life I've been told I'm not big enough, not fast enough, not strong enough and I don't have what it takes," Keselowski said from the championship stage. "I've used that as a chip on my shoulder to carry me through my whole career. It took until this year for me to realize that that was right, man, they were right.
"I'm not big enough, fast enough, strong enough. No person is. Only a team can do that."
Keselowski needed 125 starts to win his first championship, the fewest starts since four-time champion Jeff Gordon won his first title in 93 starts in 1995. Keselowski also won a second-tier Nationwide title in 2010, his first season with Penske and the owner's first official NASCAR championship.
Gordon, who avoided suspension this week but was fined $100,000 by NASCAR for intentionally wrecking Clint Bowyer last week at Phoenix, overcame the controversy to win the race in a 20th anniversary celebration for sponsor Dupont and Hendrick Motorsports.
It was Gordon's first victory at Homestead, which leaves Kentucky as the only active NASCAR track where he's yet to win.
Who did Gordon beat? Bowyer, of course.
And Bowyer's second-place finish moved him to a career-best second in the final standings. Third-place went to Ryan Newman, who got his break in NASCAR with Penske and spent seven seasons driving for the owner.