Victoria Azarenka is resting comfortably after being diagnosed with a mild concussion following her dramatic on-court collapse Wednesday at the U.S. Open.

The No. 10 seed was trailing Gisela Dulko 1-4 in their second-round match when she crumbled to the court after clutching her side. Doctors quickly attended to Azarenka, placing towels on her legs, giving her water and applying ice packs to her body. Dulko ran over to Azarenka's aid and appeared shaken as her opponent lay on the ground. A few minutes after the collapse, Azarenka was taken off the court in a wheelchair. She was taken to the hospital and diagnosed with a mild concussion. Azarenka later said she had fallen during a pre-match training session and that her condition worsened throughout the match. She was released from the hospital and was resting Wednesday night in her hotel.

The 11th-ranked Belarusian had been a popular pick to make a deep run at Flushing Meadows. Her powerful backhand is one of the best in the game and the draw seemed to set up favorably for her.

Following her release, Azarenka released a statement about her collapse:

I was warming up in the gym prior to my match against Gisela Dulko when I fell while running a sprint. I fell forward and hit my arm and head. I was checked by the medial 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. I was taken to the hospital for some medical tests and have been diagnosed with a mild concussion."