The 10th-seeded Belarusian was trailing Gisela Dulko 5-1, 31 minutes into her match on another steamy day at Flushing Meadows, when she stopped running and crumpled to the ground. She was taken to the hospital for tests, diagnosed with a mild concussion.
A scary scene on a day in which the temperature had already reached 90 degrees when the accident occurred at 11:30 a.m. However, the 21-year-old released a statement saying it was a head injury, not the heat, that set her up for the fall.
Story continues below ↓advertisement | your ad here"I was warming up in the gym prior to my match against Gisela Dulko when I fell while running a sprint," she said. "I fell forward and hit my arm and head. I was checked by the medical team before I went on court and they were courtside for monitoring. I felt worse as the match went on, having a headache and feeling dizzy. I also started having trouble seeing and felt weak before I fell."
Wearing an all-black tennis dress, Azarenka had been moving slowly throughout the match. Before she served the second point in the seventh game, she hesitated and winced in pain. After the point, she kneeled down.
A point later, while trying to run on the baseline, she stopped and crumpled to the ground. Medical personnel rushed out, draped a towel across her legs and yelled to the sideline to bring water. After a few minutes on the ground, being sheltered by an umbrella and with an ice pack on her neck, Azarenka was helped into the wheelchair and moved off the court. A trainer placed his hand on her neck to check her pulse.
"I was scared," said Dulko, who advanced to the third round. "She went to the floor. I was worried for her. I went to see her, brought some ice, did whatever I could do to help."
Dulko said the conditions were, indeed, brutal. For the second straight day, tournament officials put in place their extreme-weather policy, meaning women could ask for a 10-minute break if they split sets.
"It's tough to play out there," Dulko said. "It's really hot, really humid. You sweat so much, sometimes it's impossible to hold the racket."
In other action Wednesday, former world No. 1 Ana Ivanovic defeated 21st-seeded Zheng Jie, 6-3, 6-0 in a match that took 56 minutes.
Later, No. 3 Venus Williams defeated Rebecca Marino 7-6 (3), 6-3.
Other winners included No. 20 Sam Querrey, who defeated American Bradley Klahn in four sets. Klahn, who was limping around during the end of the fourth set, said the heat didn't bother him at first.
"I don't know if I was just caught up in the moment or just kind of not thinking about it, then all of a sudden the cramps just kind of hit me," Klahn said.
Other winners included No. 14. Nicolas Almagro and No. 4 Andy Murray, who defeated Lukas Lacko of Slovakia, 6-3, 6-2, 6-2. Seventh-seeded Tomas Berdych lost. Ryan Harrison, an 18-year-old American qualifier, defeated No. 15 Ivan Ljubicic.
Temperatures were in the mid-90s at midday.
"The weather was my biggest enemy today," Ljubicic said. "I mean, throughout my career I struggled with the heat. I'm not really coping really well with that, and I tried all kind of different tactics to deal with it. I never find the right one."
Scheduled to play later Wednesday were defending champion Kim Clijsters, Andy Roddick, Melanie Oudin and John Isner.
This wasn't the first time Azarenka has dropped out suddenly from a Grand Slam tournament.
At the 2009 Australian Open, she won the first set of her fourth-round match against Serena Williams but quit during the second set while dizzy and in tears during a hot day in Melbourne.
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