MOUNT PLEASANT, S.C. — Lorena Ochoa withdrew from the Ginn Tribute, putting the top-ranked player's duel with tournament host Annika Sorenstam on hold.

Ochoa left for Mexico late Tuesday night, saying in a statement that her uncle was ill.

"I am very sorry to have to withdraw," Ochoa said. "I need to be with my uncle and my family right now."

Ochoa has won six of 13 LPGA tournaments this season. Sorenstam, whom Ochoa surpassed last season to take the top spot, has three wins in her final year on the LPGA Tour. Sorenstam announced this month she'll retire after the season.

She offered Ochoa her support.

"She is a tremendous ambassador for our game, and we will miss her this week," Sorenstam said. "That being said, family comes first and I know she has a very close family."

Ochoa looked like she would win the inaugural Ginn Tribute last year, holding a two-stroke lead against Nicole Castrale with two holes to play.

But Castrale caught Ochoa on the 71st hole to force a playoff, then watched the world's best player drive into a marsh on the first playoff hole. That helped Castrale earn her first LPGA victory.

Leta Lindley, who won the LPGA Corning Classic last week, said Ochoa will be missed at RiverTowne Country Club.

"But I guess that leaves a little bit more money for everybody else, the way she's been playing this year," Lindley said.