STANFORD — Serena Williams withdrew from next week’s Bank of the West Classic at Stanford on Friday, citing a right elbow injury, tournament officials announced.

Williams injured the elbow while practicing at the Swedish Open on July 16, causing her to withdraw after one round.

“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, who won Wimbledon three weeks ago, said in a news release. “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.”

With Williams out, the top seeds are Caroline Wozniacki, Agnieszka Radwanska, Carla Suarez Navarro and Karolina Pliskova.

Williams won the Bank of the West for a third time last year, a win that launched a stretch in which she won all four major championships in succession for a second time in her career.

If Williams wins the U.S. Open this summer, she will become the first to win the four majors — Australian Open, French Open, Wimbledon, U.S. Open — in the same calendar year since Steffi Graf did so 27 years ago.

“Serena is having a historic season, and we wish her a speedy recovery as she prepares for the U.S. Open,” Bank of the West tournament director Vickie Gunnarsson said in a release. “Unfortunately, injuries are part of sports, and the health of the players is always the number one priority.”

Wozniacki, now the tournament’s top seed, is scheduled to play her first match Thursday night.

Williams had been scheduled to play Wednesday night. The new lineup for Wednesday was to be determined after the draw Friday night, tournament officials said.

Follow Darren Sabedra on Twitter at twitter.com/DarrenSabedra.