FILDERSTADT, Germany (AP) -- Jennifer Capriati will take over the No. 1 ranking for the first time because Martina Hingis quit her Porsche Grand Prix semifinal against Lindsay Davenport with a right ankle injury Saturday.

Hingis needed to beat Davenport to retain the top spot in the rankings, which the Swiss player held for 73 straight weeks and a total of 209 weeks.

But in the third game, Hingis lunged for a passing shot on her backhand side, stepped awkwardly and fell on her back. She lost that game, to fall behind 2-1 in the opening set, and during the changeover, Hingis' right ankle was taped.

Hingis went back on court for the fourth game but stopped after two points.

``It didn't look good on replay,'' Davenport said. ``I feel very sorry for her, she's a good friend. I was very upset. It's a really bad moment for her.''

Capriati, who lost to Sandrine Testud in the quarterfinals, will nonetheless be No. 1 when the new rankings come out Monday. Capriati won the year's first two major tournaments, the Australian and French Opens.

She is the ninth player, and fourth American, to sit atop the computer rankings since their inception in 1975.

Her rise to No. 1 caps a remarkable comeback.

When Capriati moved into the top 10 after winning the Australian Open in January, it was the first time she had been so high in the rankings since early 1994, when she had abandoned the tour at age 17 because of drug and personal problems.

Capriati went 24-2 at the Grand Slam events in 2001, with the two championships plus semifinal appearances at Wimbledon and the U.S. Open.

Hingis, meanwhile, hasn't won a major tournament since 1999, but kept the top ranking thanks to a complicated points system.

In Saturday's other semifinal, sixth-seeded Justine Henin beat Testud 6-3, 7-6 (3). Henin, seeking her fourth title of the year, will play the No. 3-seeded Davenport on Sunday for the title at the $565,000 tournament.