Rory McIlroy birdied three of his last four holes for a round of 67 (−4). Bernd Wiesberger recorded birdies on his last three holes to record the lowest score of the round with a 65 (−6) and move into second place, one shot behind. A tight leaderboard saw five players tied for the lead at 10-under at one point on the back-nine. The scoring average for the round was 69.6, the lowest in PGA Championship history.
