As a result of Azarenka’s withdrawal, 2011 BNP champion Caroline Wozniacki will advance to the semifinals against Angelique Kerber.
Speaking to reporters, Azarenka said she entered the tournament with some initial pain in her right ankle and foot. As she played on the hardcourt at Indian Wells this week, she said the pain intensified.
An MRI taken Wednesday revealed inflammation around the tendon, and Azarenka said she was advised not to play on it for risk of further damage.
“Very disappointed,” Azarenka said. “Extremely disappointed because I feel I’m playing really well right now. I love this tournament.”
Azarenka said she has not ruled out playing in the Sony Open in Miami later this month. She plans to see a doctor in Los Angeles next week and hope that the rest and treatment she receives will help restore her health.
“We’ll see how it goes,” Azarenka said.