Andy Murray captured the biggest title of his career with an emphatic victory over Roger Federer in the Olympic men's singles final at Wimbledon.Murray beat the Swiss world number one in straight sets, 6,2 6,1 6,4, on a raucous Centre Court.The 25 year old Scot had never beaten Federer in a best of five sets match and lost to him in the Wimbledon final.He is the first British man to win the Olympic singles gold medal since Josiah Ritchie in 1908.Murray plays the mixed doubles final with Laura Robson later on Sunday.The pair face Belarusian top seeds Victoria Azarenka and Max Mirnyi knowing they are guaranteed at least a silver medal.Murray's singles triumph completed in just an hour and 56 minutes continues a glorious home Games for Team GB, who sit third in the medal table.