The biggest change: Lorena Ochoa's ascension to the No. 1 ranking in the world, which was facilitated by Sorenstam's absence since the Kraft Nabisco Championship on April 1.
This week, the former world No. 1 will return ahead of schedule to compete in her new tournament, the Ginn Tribute.
'Annika's rehabilitation has progressed well and she looks forward to resuming competitive play,' her agent, Mark Steinberg, said last week.
Also resuming competitive play this week is 17-year-old Michelle Wie, who accepted a sponsor's exemption and will be appearing for the first time since suffering a wrist injury in February.
The field also includes other top players like Ochoa, Karrie Webb, Morgan Pressel, Juli Inkster and Paula Creamer.
The GOLF CHANNEL will have coverage of the first two rounds, and NBC will broadcast on the weekend. Next week is the second major of the season, the McDonald's LPGA Championship, where Se Ri Pak beat Webb in a playoff last year.