Shin came away a two-stroke winner over No. 1-ranked Yani Tseng and women's golf wunderkind Lydia Ko. Shin has 37 professional wins, with the victory in Australia giving her 11 titles on the LPGA tour.
She goes from No. 8 to sixth in the rankings while Ryu So-yeon drops from sixth to eighth. Those were the only changes in this week's Top 10.
Tseng, whose runner-up finish Sunday pushed her past the $9 million mark in career winnings, has been No. 1in the rankings for 106 weeks. Only Lorena Ochoa has been ranked first longer. Tseng is 52 weeks behind Ochoa's record tenure as No. 1.
Feng Shanshan has an average of 6.75 for fifth and is just ahead of the 6.68 average posted by Shin. Suzann Pettersen (6.46) is seventh while Ryu's average is 6.28. Ai Miyazato (6.03) and Mika Miyazato (5.37), who aren't related, complete the Top 10.
Ko, 15, who had a victory at the New Zealand Women's Open Feb. 10, moves to 26th in the world rankings after her tie for second Sunday.