UNIVERSITY PLACE, WA – Jason Day struggled with vertigo, but the Australian emerged with a share of the 54-hold lead at Chambers Bay on Saturday after shooting a two-under 68.
Branden Grace of South Africa and American Dustin Johnson each shot even-par 70s on Saturday and also sit at four-under through three rounds.
Third round co-leader Jordan Spieth is the fourth player at four-under, after shooting a one-over-par 71 on Saturday.
Patrick Reed, who also shared the lead after 36 holes, is now five shots off the pace after shooting a 76 on Saturday.