CARSON, Calif. (AP) – Lindsay Davenport’s comeback ended with a 7-6 (4), 5-7, 3-6 loss to Australian Samantha Stosur in the JPMorgan Chase Open on Wednesday.

Out since March because of a back injury, Davenport battled her own errors and lack of fitness in her first tournament since Indian Wells.

She led 4-1 in the first-set tiebreaker before Stosur tied it at 4. Davenport won the final three points, including two on Stosur’s backhand errors.

Stosur earned the only service break of the second set at 3-2. She closed out the set on a forehand passing shot. After a brief break because of the heat, Stosur raced to a 5-3 lead in the third. Davenport, a four-time winner of her hometown tournament, double-faulted on match point.

Stosur improved to 21-16 in singles matches this year. She has yet to win a WTA tour singles title, although she forms one of the tour’s top doubles teams with Lisa Raymond. They won this year’s French Open title and reached the semifinals at Wimbledon.

The victory was Stosur’s first over Davenport in four career meetings. She advanced by walkover last year when Davenport had bronchitis in the quarterfinals at Sydney.

Davenport has an 8-4 match record in four tournaments this year, with the U.S. Open three weeks away. She has slipped to 10th in the rankings.

Serena Williams was set to continue her comeback later in a second-round match against Ashley Harkleroad. Top-seeded Maria Sharapova played Anastassia Rodionova of Russia in a night match.

Other winners Wednesday were sixth-seeded Anna-Lena Groenefeld of Germany; No. 7 Daniela Hantuchova of Slovakia; No. 14 Shahar Peer of Israel; and 15th-seeded Marion Bartoli of France.