Seven-time major winner Karrie Webb of Australia was among five players sharing the clubhouse lead at 1-under 71 in the first round of the Women's British Open on Thursday.

Webb won the British Open at Turnberry in 2002. Another former champion, 2008 winner Jiyai Shin of South Korea, had the first sub-par round at Royal Liverpool, followed by 16-year-old England amateur Charley Hull, Japan's Ai Miyazato and Welsh pro Lydia Hall.

Taiwan's Yani Tseng, bidding for her third successive British Open, was a stroke behind with less than a third of the field in the clubhouse. Joining her were 15-year-old New Zealand amateur Lydia Ko, Sweden's Carin Koch, Japan's Yuki Ichinose and Koreans Inbee Park and Chella Choi.

Paula Creamer and Natalie Gulbis were the leading Americans with 73s.