KEY BISCAYNE, Fla. -- Victoria Azarenka's 26-match unbeaten streak across the first three months of the year was ended Wednesday by Marion Bartoli, who beat the world No. 1 in straight sets in the quarterfinals of the Sony Ericsson Open.
Azarenka's streak, which included her Australian Open title, was the best on the women's tour since Martina Hingis went 37-0 to begin 1997.
|Azarenka, who started the year with 26 match wins in a row, is disappointed after losing her first match. (AP)|
"I'm a human, not a superwoman, and I wish I could be, but I'm not," Azarenka said with a smile. "I feel disappointed, sure. Who wouldn't be after the loss? But what I've done in the last couple of months, I have to be really proud of myself."
The steady Bartoli took charge of rallies by playing inside the baseline.
"Sometimes I took the ball extremely early," she said. "It was almost table tennis."
Seeded No. 7, Bartoli advanced to the Key Biscayne semifinals for the second time in three years.
Williams was weary after winning three consecutive three-set matches in her comeback tournament. It was her first tournament since the U.S. Open last August, where she withdrew after being diagnosed with a fatigue-causing autoimmune disease.
"It was disappointing not to be able to feel my best today," Williams said. "I was able to keep it close in the first set and try different strategies, but it was definitely a mental battle, and today I didn't conquer the mental part of it."
"It has been a great tournament," she said. "I'm disappointed and would have liked to have gone further, but it's a great start."
Eager to keep points short in the heat, Williams charged the net often but frequently had to lunge for shots. She committed 38 unforced errors to 10 for Radwanska, and won only five of 26 points on her second serve.
Radwanska, ranked a career-best No. 4, is 0-4 this year against Azarenka and 24-0 against everyone else.