Hideki Matsuyama
Mahan was tied for the lead as late as the 14th hole before going +4 on the last four holes and dropping into a four-way tie for fourth, four strokes back. Jason Dufner shot a 67 (−3) despite a triple-bogey on 15 to tie Mahan, Horschel, and Ernie Els. Hideki Matsuyama also shot a 67 with six birdies to finish in a tie for tenth. Schwartzel started the day one shot back, but a 78 dropped him outside the top 10.