File photograph shows Britain's four-time Olympic champion Matthew Pinsent who has announced his retirement from rowing. A file photograph shows Britain's four-time Olympic champion Matthew Pinsent (R) who announced his retirement from rowing, November 30, 2004. In this file photograph taken on August 28, 2003, Pinsent is seen with James Cracknell (L) rowing to victory during the men's pair semi-finals at the World Rowing Championship in Milan. REUTERS/Toby Melville