Switzerland's Nadine Zumkehr (R) and Simone Kuhn celebrate after defeating Greece's Maria Tsiartsiani and Vasiliki Arvaniti during the women's beach volleyball preliminary match at the Horse Guards Parade during the London 2012 Olympic Games July 28, 2012.[Photo/Agencies]

Greece's Maria Tsiartsiani dives for the ball during the women's beach volleyball preliminary match against Switzerland at the Horse Guards Parade during the London 2012 Olympic Games July 28, 2012.[Photo/Agencies]