Kyrinis, of Canada, had a flawless round going, with just three birdies through 15 holes. But the 54-year-old bogeyed her final three holes coming in to get back to even par.
West, of Tuscaloosa, Ala., had a much less eventful day with just one birdie and one bogey on her card. Australian Wooster split four birdies with four bogeys.
Right behind the trio of leaders, Ellen Port is in solo fourth after a 3-over 75. Port was even on the front but 3 over on the back. The 56-year-old is just two weeks removed from her run to match play at the U.S. Women’s Amateur. She also made the cut earlier this summer at the inaugural U.S. Senior Women’s Open.