World No. 2-ranked Maria Sharapova has been forced to withdraw from the 2013 Bank of the West Classic due to a left hip injury suffered during Wimbledon.
"We are disappointed for our fans that Maria won't be able to attend this year's Bank of the West Classic but unfortunately injuries are a part of the sport and we understand that a player's health must always come first," said Bank of the West Classic Tournament Director Kim Hall. "We wish her a speedy recovery and hope she is able to return to the court soon."
The tournament was also was notified Monday that Kirsten Flipkens of Belgium has also withdrawn. She was one of four Bank of the West entrants to reach Wimbledon's semifinals.
With those withdrawals, former world No. 4 Daniela Hantuchova and up-and-coming American Christina McHale receive berths into the main draw.
In addition, the Bank of the West Classic announced Monday that it has granted a wild card into the main draw to former Stanford All-American Mallory Burdette.
Burdette, who turned professional shortly after last year's Bank of the West Classic, reached the third round of last year's US Open and has risen quickly up the world rankings. She is currently No. 78.
The Bank of the West Classic still boasts a strong player field including reigning Wimbledon champion Marion Bartoli, current world No. 4 Agnieszka Radwanska, 2011 US Open champion Samantha Stosur and 2010 French Open champion Francesca Schiavone.
Tickets for the 2013 Bank of the West Classic, which will be held July 22-28 at Stanford's Taube Family Tennis Stadium, can be purchased by calling the box office at 866-WTA-TIXS (866-982-8497) or by logging on to www.BankoftheWestClassic.com.
The Bank of the West Classic is the longest-running women-only professional tennis tournament in the world and is the first stop of the Emirates Airline US Open Series. Owned and operated by IMG, the WTA Premier event features a 28-player singles draw and a 16-team doubles draw with total prize money of $795,000.