HOYLAKE, England - Karrie Webb's challenge fell apart as Jiyai Shin overcame atrocious weather and a marathon 36-hole final day to claim a second Women's British Open title by nine shots.
Australian great Webb was well-placed to claim a fourth British Open crown and eighth major title when she charged into contention with a third round 68 and went into the final round at wet and windswept Royal Liverpool Golf Club in second place, three shots behind South Korean Shin.
But she shot a 10-over-par 82 to fall to a tie for fifth as Shin closed with a 73 to win at nine-under from compatriot Inbee Park (76).
Shin's winning margin was the biggest since the Championship became a major in 2001.
American Paula Creame closed birdie, eagle, par and birdie, to place third on one over par after a 72.
Finishing in near darkness, the victory completed a remarkably impressive week for 24-year-old Shin, who has now won 10 times on the LPGA Tour.
Last Monday, she had needed nine extra holes to beat Creamer in a play-off for the Kingsmill Championship on the LPGA Tour.
"That was a long, long day and very tough," said the new champion.
"I have never played in such bad weather, but I managed to stay focused and now I'm just so excited.
"Winning at Sunningdale four years ago was my first big win and changed my life. Now I have even more great British Open memories."
Shin's victory means that for the first time in history Asians have won all four of the women's Majors in a single calendar year with South Korea's Sun Young Yoo winning the Kraft Nabisco Championship, China's Shanshan Feng claiming the LPGA Championship and South Korea's Na Yeon Choi taking the US Women's Open earlier this year.