WEST PALM BEACH, Fla. (AP) -- Annika Sorenstam's farewell to the LPGA Tour could come two days earlier than she hoped.

Sorenstam shot a 2-over par 74 in Thursday's opening round of the ADT Championship, good for a tie for 23rd in the 32-woman event, her final tournament before "stepping away" from competitive golf. The field gets trimmed to 16 after Friday's play, meaning Sorenstam has some work remaining just to reach the weekend.

Otherwise, a Hall of Fame career will come to an unceremonious end.

"I was a little nervous. I feel like I'm playing good. I'm excited about the week," Sorenstam said. "But I'm telling you, nothing went my way today."

She was 4 over after 10 holes, but rallied with back-to-back birdies on the par-4 14th and par-5 15th and finished six shots behind Katherine Hull (68).

Sorenstam is a four-time ADT winner and is a giant fan of the Trump International course, but in this double-cut, erase-the-scores format, she's never even reached the weekend.

The scores are erased after Friday's play, then get wiped clear again after Saturday's round, after which only the top eight will be invited back Sunday to play for the $1 million winner's prize.

Hull, one of the hottest players on tour over the last three months, finished one shot better than Ji-Yai Shin and In-Kyung Kim. Three others -- Ji Young Oh, Eun-Hee Ji and Na Yeon Choi -- were two strokes off Hull's pace.

Oddly, little attention was paid to the top of the leaderboard.

Most of the star power was off the first page.

World No. 1 Lorena Ochoa, the defending champion, was 6 over in one rough eight-hole stretch and finished tied for 26th after a 75. Cristie Kerr, last year's U.S. Women's Open champion and a member at Trump International, was tied for 29th -- last -- after shooting 78. Inbee Park, the reigning U.S. Open winner, withdrew after starting a whopping 13 over through 14 holes.

"A few birdies will help," Ochoa said. "I can do that."

Hull said she won't play any differently Friday even though it would take a colossal collapse for her to miss qualifying for Saturday. But since this format came into play in 2006, the first-round leader hasn't gone on to win the $1 million.

"I won't play any more aggressive or any less conservative," Hull said. "I just try to hit as many greens as possible and make as many birdies as possible."

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