CARMEL, Ind. (AP) -- U.S. Open champion Dustin Johnson ran off four birdies in his last five holes Saturday for a 4-under 68 and took a three-shot lead into the final round of the soggy BMW Championship.
Paul Casey did his best to stay with him. Casey, coming off a runner-up finish last week in the FedEx Cup playoffs, matched two of Johnson's birdies during his late run for a bogey-free 68.
Johnson ended with an 18-foot birdie putt that put him at 18-under 198. He will be going for his third victory of the year and move to the top of the FedEx Cup going into the finale at the Tour Championship.