Elaine Crosby shot a 3-under-par 70 Thursday at Chicago Golf Club for the lead after one round of the inaugural U.S. Senior Women's Open.
A winner of two tournaments in 17 LPGA seasons, the 60-year-old Crosby owns a one-shot advantage over Trish Johnson, Laura Davies and Liselotte Neumann.
Crosby started on the back nine with a 3-under-par 34 and made just one bogey on the day at one of the oldest 18-hole courses in the U.S.
Johnson, who won the first Senior LPGA Championship in 2017, birdied four of the five par-5 holes.
Helen Alfredsson shot a 72, while Juli Inkster, Jean Bartholomew, Marilyn Lovander and Alicia Dibos matched par.
The first 72-hole USGA championship for women 50 and older began with a tee shot by the oldest player, 79-year-old JoAnne Carner. Carner proceeded to shoot her age, and has set a goal of making the 36-hole cut.