Suzann Pettersen needed three playoff holes Sunday as she defeated Catriona Matthew and earned her ninth LPGA Tour title. That win helped Pettersen move up two spots in this week's women's world rankings.
Pettersen climbed to No. 7, while Matthew soared seven spots to 15th.
Yani Tseng was No. 1 again and followed by Stacy Lewis, Na Yeon Choi, Shanshan Feng, Inbee Park and Jiyai Shin.
Pettersen's move pushed Ai Miyazato and Mika Miyazato down to eighth and ninth. So Yeon Ryu, Paula Creamer, Sun Ju Ahn, Amy Yang and Cristie Kerr were 10th to 14th again this week.
Matthew was followed by Karrie Webb, Azahara Munoz and I.K. Kim, who each fell one spot. Chie Arimura held steady at No. 19, while Angela Stanford tumbled two to 20th.
Sun Young Yoo was also down two as she fell from 20th to 22nd.