Bartoli, Mirza out; Zvonareva, Schnyder, Safina advance

DOHA, Qatar -- Caroline Wozniacki upset eighth-seeded Marion Bartoli 6-2, 6-3 in the second round of the Qatar Open on Tuesday, while fan favorite Sania Mirza pulled out with leg cramps.

Wozniacki had little trouble against last year's Wimbledon finalist, who had a bye in the first round.

"I took a long time to adjust to the playing conditions here," Bartoli said. "I played at Paris Indoors but could not adjust in Doha that quickly. I think she played really well today."

Mirza, Asia's top-ranked women's player who enjoys a large fan base in Qatar, had to retire while trailing 3-2 in the third set of a first-round match against Olga Govortsova of Belarus.

"I was cramping up in my leg, toes and even in my shins in the second set," Mirza said. "Maybe it was a case of lack of match practice. I was playing my first singles match after nearly four weeks."

In Tuesday's other second-round match, Vera Zvonareva defeated 17th-seeded Francesca Schiavone 2-6, 6-3, 6-4. In first-round action, ninth-seeded Patty Schnyder ousted Tamira Paszek 6-4, 6-0, while 11th-seeded Dinara Safina edged Katarina Srebotnik of Slovenia 6-2, 6-4.