Knee injury sustained in singles loss on Monday‘I’m heartbroken to have to withdraw’Serena Williams will not compete with Venus Williams in the doubles after she was forced to withdraw from their first-round match due to the knee injury sustained in her singles return at Wimbledon.Williams had been in a race to be fit to face Camila Osorio and Solana Sierra on Saturday afternoon. But she has not recovered from twisting her knee in the first set of her opening-round singles match against Maya Joint, which she lost 6-3, 6-7 (6), 6-3. Continue reading... ...read more read less