HOMESTEAD, Fla. (AP) -- Here's a tweet for Brad Keselowski: NASCAR champion.

Roger Penske must like the sound of that, too.

The kid who stole the show at the season-opening Daytona 500 ended the year under the biggest spotlight of them all Sunday, beating five-time champion Jimmie Johnson to deliver the first Sprint Cup championship to Penske Racing.

It's a trophy that had eluded Penske since he first entered NASCAR in 1972. Although his motorsports organization is considered the gold standard of IndyCar racing -- 15 Indianapolis 500 wins -- and his empire has made Penske one of the most successful businessmen in America, his NASCAR team operation was always just average.

Then came Keselowski, the blue collar, Twitter-loving, Michigan native who convinced "The Captain" his NASCAR team could be a winner, too.