Full coverage from Wimbledon in the women's singles tennis 3rd round as the USA's Serena Williams takes on Russia's Vera Zvonareva at the London 2012 Olympic Games.
Subscribe to the Olympic channel: http://bit.ly/1dn6AV5
Tennis has a long Olympic history but withdrew from the programme after 1924. It did not return as a medal sport until 1988. Professionals are now welcome to compete, and the Olympic competition includes men's and women's singles and men's and women's doubles.
Find more about Tennis at http://www.olympic.org/tennis
