Sweden's Annika Sorenstam tees off on the 12th hole at the LPGA Kraft Nabisco Championship golf tournament in Rancho Mirage, California, in this March 31, 2007 file photo. Mexico's Lorena Ochoa replaced Annika Sorenstam as world number one on Monday, the first time the Swede has been dethroned since the official rankings were introduced early last year. [Reuters]

After missing two chances to become No. 1 in women's golf, Lorena Ochoa finally replaced Annika Sorenstam at the top on Monday without even hitting a shot.

Despite the U.S. LPGA Tour having no tournaments last week, Ochoa moved to No. 1 in the computerized ranking with 12.84 points, while Sorenstam was at 12.70.

Ochoa, who won six times last year and was the U.S. LPGA player of the year, could have gone to No. 1 by winning the Kraft Nabisco Championship a month ago and the Ginn Open that ended on April 15. She made double bogey on the final hole at the Ginn Open to finish one shot behind Brittany Lincicome.

Ochoa, 25, still had cause for celebration. She is playing this week in the Corona Morelia Championship in her Mexico homeland, her first tournament as the No. 1 player in women's golf.

"Today is one of the most special days in my life," Ochoa said. "It's really special because I am at home and I am able to celebrate the news with the people in my country. This is a huge accomplishment for me."

The women's world ranking began 14 months ago.