Pettersen finished second behind Kim In-kyung at the Lorena Ochoa Invitational, which had its final round Sunday. The win boosted Kim from ninth to seventh in the world rankings and Pettersen went from fifth to second.
With only the LPGA Tour Championship -- Dec. 2-5 in Orlando, Fla. -- remaining on the tour's 2010 calendar, positioning continues for the year's final standings. With little difference in rankings point average among many players, there could be substantial juggling after the championship.
Shin held the top spot -- for a third consecutive week -- with a rankings average of 11.48, but six players changed positions in the Top 10.
Pettersen is second at 10.99 while Cristie Kerr, who remained in third this week, averages 10.67. Yani Tseng (10.60) dropped from second to fourth and Choi No-yeon (10.55) is down one place to fifth.
Ai Miyazato (10.41) kept the No. 6 spot but Kim's win Sunday put her into seventh with an average of 8.22 and knocked Michelle Wie (7.57) and Kim Song-hee (7.51) both down a place to eighth and ninth, respectively. Paula Creamer (7.50) is 10th.