South Korean Jenny Shin shot a bogey-free, seven-under-par 66 Thursday for a one-stroke lead after the opening round at the KPMG Women's
Canadian teenager Brooke Henderson had a three-putt bogey on the final hole (9) to drop a shot back after Shin birdied No. 18 at the Westchester Country Club in Harrison, N.Y.
Shin had five birdies and an eagle on the par-five 15th. The 17-year-old Henderson, playing on a sponsor exemption, eagled the par-five 12th.
Hall of Famer Karrie Webb birdied three of the first four holes and finished at 68. The 40-year-old Webb, who started on the back nine, had a bogey-free round until she dropped a shot on the seventh.
Americans Brittany Lincicome, Lexi Thompson, Cristie Kerr and Stacy Lewis were in a large group that finished four strokes back at 70 in steamy temperatures that reached the mid-80s. Lincicome, the winner of the first major at the ANA Inspiration in April, eagled the par-five 15th and followed with a birdie on 16.
Two-time defending champion Inbee Park shot a 71. Top-ranked teenager Lydia Ko was another stroke back, and Suzann Pettersen, coming off a win in Canada, finished at 74.
Palmer, a three-time
Koepka, who won in Phoenix earlier this year, matched his low round of 2015 with eight birdies and two bogeys, while Owen shot his best round this year with a bogey-free round featuring six birdies.
Scott Brown, Steven Alker and
Boo Weekley was tied with six others at 67, and
Bernhard Langer had four birdies on the final five holes to tie a course record with a six-under 65 in the first round of the Senior
The tournament's 2014 winner bogeyed twice but also had four birdies on the front nine.
Guy Boros, Lee Janzen, and Rocco Mediate finished the round in a three-way tie for second at four-under 67.
Boros birdied three of his final six holes. Janzen made five birdies on his first nine while Mediate opened with three birdies on his first four.