Authors: By RUSTY MILLER
SPARTA, Ky. (AP) -- Brad Keselowski was the only driver at Kentucky Speedway to compete in all three NASCAR races.
By late on a hot Saturday night in the Bluegrass countryside, he was also the only one to pick up a third Sprint Cup win of the season.
Now Keselowski is elbowing his way into the season-ending Chase picture and making more than a couple of other drivers nervous about their own chances.
As the Cup series builds to its climactic stretch run, Keselowski, who also won at Bristol and Talladega and is 10th in the standings, is making a lot of people take notice.