The Russian ace was beaten by Nicole Vaidisova in the Family Circle Cup second round.
French Open champion Anastasia Myskina lost to 15-year-old Czech Nicole Vaidisova in the second round of the Family Circle Cup.
Despite spraining her left ankle on Friday, the former world No. 1 is hopeful of playing the first round tie against Belgium.
The American ace has won all 10 semi-finals she played this season and never failed to reach the title match in Zurich in the six years she has played the event.
Davenport saved two match points to beat Hantuchova and reach the quarter-finals of the Zurich Open.
Both survived tough opening matches at the Pacific Life Open Masters Series.
However, French Open champion Anastasia Myskina's run of miserable form continued when she was beaten by Switzerland's Patty Schnyder.
Venus Williams, who had advanced to the quarter-finals, pulled out of the China Open with a left knee injury
Amelie Mauresmo beat American Lindsay Davenport for the first time in 12 matches to enter the semi-finals of the China Open.
The world No 1 beat the American for the first time in 12 matches to enter the semi-finals of the China Open.
The second seeded American whipped Russia's Lioudmila Skavronskaia in the Bank of the West Classic.
Sania jumped 35 places to 99 in the latest world rankings.
Indian pistol shooters, on Wednesday, pulled off a clean sweep in the 10m air pistol event at the Commonwealth Shooting Championship with Shahzar Rizvi, Omkar Singh and Jitu Rai winning gold, silver and bronze medals respectively.
Lindsay Davenport beat Russian Anna Chakvetadze 6-3, 6-3 to reach the final of the New Haven Open
The American will regain the world number one ranking from Russian Maria Sharapova if she reaches the final.
The two players were named as the top seeds for the men's and women's singles event at the Australian Open which starts on Monday.
Back strain forced Lindsay Davenport to pull out of her second round clash against Anna-Lena Groenefeld at Stanford