Sorenstam remained No. 1 with Lorena Ochoa holding steady in the second spot. Webb closed the gap on Ochoa, trailing now by just 0.55 average points after trailing by 1.43 average points last week.
Nos. 4 through 11 remained unchanged from last week with Cristie Kerr followed by Juli Inkster, Ai Miyazato, Jeong Jang, Paula Creamer, Shiho Ohyama, Pat Hurst and Michelle Wie.
Se Ri Pak and Hee-Won Han both inched up one to 12th and 13th respectively. To make room for them, Yuri Fudoh slid two spots. Mi Hyun Kim and Seon-Hwa Lee held on to the 15th and 16th positions from last week.
Akiko Fukushima and Natalie Gulbis exchanged positions from last week with Fukushima up to 17th and Gulbis down one to 18. Jee Young Lee held steady at 19, while Morgan Pressel was up one to close out the top 20. To make room for Pressel, Sophie Gustafson fell two places to 22nd.
The big movers in the top 100 were Kaori Higo, up 30 to No. 60, Aree Song, up 14 to No. 83, and Jeong-Eun Lee, up 15 to 99th. Higo took second behind Webb at the Mizuno, while Song and Lee shared third with Sorenstam and Brittany Lang.