Scott is 2 under par at Muirfield in Gullane, Scotland. The Australian moved into the lead with four birdies over a five-hole stretch between the seventh and 11th holes.
Mickelson made consecutive birdies on the 13th and 14th holes to reach 1 under. Westwood, who brought a two-shot lead into today’s play, is 2 over through 10 holes.
Tiger Woods is 4 over for this round and trails Scott by five shots.
To contact the editor responsible for this story: Bob Bensch at email@example.com