Novak Djokovic has ended the season with a record $12.6 million in prize money. The 24-year-old Serb won 10 titles in 2011, including three Grand Slams, to beat the previous record of $10.1 million shared by Rafael Nadal for his 2010 season and Roger Federer for 2007. Djokovic moved ahead of Andre Agassi to fourth on the career prize money list with $32.9 million. More...