Kim Sei-young remains the player to beat heading into the final round at Aronimink Golf Club.
Disappointing days for Shane Lowry and Matt Fitzpatrick allowed Tyrrell Hatton to move top of the BMW PGA Championship leaderboard.
There is a log-jam atop the leaderboard heading into the weekend, while Bryson DeChambeau remains within striking distance.
South Korean Kim Sei-young – a 10-time LPGA Tour champion but eyeing her first major – birdied five of the final six holes on Friday.
Shane Lowry and Matt Fitzpatrick head into the weekend at Wentworth with a share of the lead.
Bryson DeChambeau continued where he left off on Thursday, setting the early pace in Las Vegas.
Brittany Lincicome and Kelly Tan both carded 67s to earn a share of the one-stroke lead at Aronimink Golf Club in Pennsylvania.
Justin Harding and Adri Arnaus finished strongly to match Tyrrell Hatton at the top of the BMW PGA Championship after the first round.
Sergio Garcia carded a five-under-par 67 to claim the tournament by one stroke for his first trophy since celebrating Masters glory in 2017.
A play-off was needed to separate Tommy Fleetwood and Aaron Rai, who lifted the Scottish Open for his second European Tour crown.