Williams sisters, Wozniacki all lose at Wimbledon (AP)

Serena Williams of the US celebrates a point win during the match against France's Marion Bartoli at the All England Lawn Tennis Championships at Wimbledon, Monday, June 27, 2011. (AP Photo/Anja Niedringhaus)AP - Walking away from Centre Court, Oracene Price — mother and sometimes-coach to Serena and Venus Williams — shook her head after watching one daughter lose at Wimbledon, then the other.