World number one and defending champion Serena Williams has withdrawn from Stanford with a right elbow injury.
“I’m disappointed to have to withdraw from the Bank of the West Classic, but I need to get my elbow back to 100 percent,” Williams said in a statement released by tournament officials.
“The tournament is one of my favorites and the fans have always been so generous and supportive of me. I wish all of the players much success and I hope to return next year.”
The American suffered an injury before the start of French Open but it didn’t kept her out from participating in the event and later she went on to win the tournament.
She was forced out of the Swedish Open earlier this month. Williams next scheduled US Open warm-up is at the hardcourt tournament in Toronto in two weeks.
“Serena is having a historic season and we wish her a speedy recovery as she prepares for the US Open,” said Stanford tournament director Vickie Gunnarsson.
“Unfortunately injuries are part of sports and the health of the players is always the number one priority.”
In Williams’ absence, Denmark’s Caroline Wozniacki will be the top seed.