London 2012: Youngest and Oldest competitors in the Olympic Games

As German gymnast Oksana Chusovitina competed in her last ever Olympic Games at the grand old age of 37, before taking the silver in the vaulting yesterday (August 5), we take a look at the youngest and oldest athletes - from 71-year-old equestrian Hiroshi Hoketsu to 13-year-old Togo swimmer Rebecca Adzo Kpossi - taking part in London 2012.