Just when it appeared Louis Oosthuizen might be starting to crack, he drove the ninth green and rolled in a long bomb for an eagle that lifted him to 16 under. Casey drove the green, too, and two-putted for birdie but he went to the homeward nine trailing by four.
Oosthuizen has an eight-stroke advantage over Henrik Stenson and Martin Kaymer who are tied for third. Shoot, Casey is even four strokes ahead of them.
Can you say match play? – Helen Ross