Sorenstam, the No. 1 seed, posted a 2 and 1 victory over Joanne Morley in their first-round match Thursday at the HSBC Women's World Match Play Championship.
Lorena Ochoa, the No. 3 player in the field, continued her disastrous play from Cherry Hills last week. On the 72nd hole of the U.S. Women's Open, she carded a quadruple-bogey when a par would have put her in a playoff.
On Thursday, she was the highest-ranked player knocked out as Laurie Rinker bested her, 2 and 1.
Natalie Gulbis, the fifth seed, was ousted by 60th-seeded Marisa Baena, 1-up.
Birdie Kim, who holed out from a bunker on the final hole to win the U.S. Women's Open, fell to 59th-seeded Sophie Gustafson, 1-up.
Sorenstam fell 1-down after Morley birdied the seventh hole, but the Swede evened things with an 8-foot birdie at No. 8. Morley bogeyed the 13th to give Sorenstam a 1-up lead and the top-money winner on tour padded her edge with a birdie at 15 when her 8-iron approach stopped 10 feet from the hole.
The two traded pars at 16 and 17, giving Sorenstam the first-round win.
'I just try to mind my own game, hit one shot at a time and kind of stay in the present,' said Sorenstam. 'I felt she played pretty good today. it was quite some good golf I thought in the group, very consistent throughout.'
Sorenstam gets 32nd-ranked Tina Barrett on Friday. Barrett bounced Young Kim in the first round, 5 and 3.
Kerr took command early with wins at four, six and eight. Wright rebounded with victories at nine and 10, but Kerr re-established a 2-up advantage with a birdie win at No. 11.
Kerr birdied the next par-5, the 14th, to go 3-up. Wright fought back with a birdie at the 16th, but when the pair parred the 17th, Kerr advanced to the second round.
'I won 2-up, but I played very well,' admitted Kerr. 'I was 4- or 5 under for the day. I made six birdies. She played very, very well. You have to play well to win.'
Kerr will next face Liselotte Neumann, who moved on with a 4 and 3 thumping of Moira Dunn.
Ochoa and Rinker were tied until Rinker birdied the 14th to go 1-up. Rinker added another birdie at the 15th to take control, but she bogeyed the 16th. Ochoa was 1-down, but Rinker closed the door with a birdie at 17 and a 2 and 1 victory.
'I played really good, but didn't make any putts,' admitted Ochoa. 'She made a a couple of really good putts for birdie and for par. That was the difference.'
Rinker will take on Christina Kim in the second round. Christina Kim defeated reigning Women's British Open champion Karen Stupples, 3 and 2 in the final first-round match.
Baena sank a 3-footer on the last hole to trip Gulbis, while Gustafson was a foot closer on her putt that stopped Kim.
Baena will take on Grace Park in Friday's second round. Park, No. 37, advanced thanks to a 2 and 1 win over Michele Redman. Gustafsson gets 38th-seeded Shi Hyun Ahn, who bested Karine Icher, 2 and 1.
Paula Creamer, the four seed, easily dispatched Maria Hjorth, 4 and 3. That sets the 18-year-old up with one of the most interesting second-round matches. She will play Karrie Webb, a 3 and 2 winner over Soo-Yun Kang.
In Thursday's first match, 58th-seeded Wendy Doolan defeated No. 7 Rosie Jones, 2 and 1. Doolan will face Pat Hurst, the 39th-ranked player, in the second round after Hurst stopped Jimin Kang, 2-up.
American Hall of Famers Beth Daniel and Juli Inkster were triumphant on Thursday. Daniel, the 53rd-ranked player in the field, clobbered Lorie Kane, 5 and 4 and Inkster, seeded 11th, topped Sung Ah Yim, 3 and 1.
Daniel will battle 21st seed, Jennifer Rosales in the second round. Rosales was a 1-up winner over Angela Stanford in the opening round. Inkster drew Ai Miyazato, who is in the field because she is the leading money winner on the Japanese LPGA Tour. Miyazato moved on after a 2 and 1 victory over Laura Diaz.
Amateur Shinobu Moromizato beat Emilee Klein, 2-up, to set up a second-round match with 13th-ranked Jeong Jang, who defeated Reilley Rankin 4 and 3 on Thursday.
Candie Kung, No. 8, topped Candy Hannemann, 2 and 1. Kung will play Leta Lindley, the 40th seed who stopped Stacy Prammanasudh, 2 and 1.
Gloria Park, the only other top-10 player who advanced on Thursday, meets Nicole Perrot on Friday. Perrot, who held the second-round lead at Cherry Hills, is 42nd in the field, but upset 23rd-rated Jill McGill, 5 and 3.
A.J. Eathorne, No. 56, needed 21 holes to defeat No. 9 Catriona Matthew, 1-up. Eathorne squares off with Dorothy Delasin on Friday as Delasin trumped 24th- seeded Heather Bowie, 3 and 2.
Kim Saiki, 50th in the field, clobbered 15th-ranked Laura Davies, 6 and 4. Saiki gets Meena Lee, No. 47, as Lee slipped by Hee-Won Han, 1-up in 19 holes.
Mi Hyun Kim posted a 4 and 2 victory over Meg Mallon, 49th in the tournament. Kim will meet Rachel Hetherington, No. 48, who advanced thanks to a 2-up victory over sponsors' exemption, Se Ri Pak.
Wendy Ward, ranked 14th, won 3 and 1 against Joo Mi Kim and that got her a second-round battle with 46th-ranked Silvia Cavalleri, who eliminated Carin Koch, 1-up on the second extra hole.