Ashleigh Buhai leads the 2019 Women's British Open by one stroke after she shot an opening-round 65 on the Duchess Course at Woburn Golf and Country Club on Thursday.
American Danielle Kang and 20-year-old Hinako Shibuno each held shares of the lead outright at one point but head into Friday's second round trailing Buhai by one shot.
World No. 1 Jin Young Ko birdied the 18th to move up to joint-eighth on four under, while Brooke Henderson shot three under and is one of 10 participants tied in 11th place after Day 1. Georgia Hall also carded 69 and sits at three under after getting her title defence underway.