|26/06/13||C Black & M Erakovic||All England Lawn Tennis Championships||R1||Lost|
|31/05/13||S Hsieh & S Peng||French Open||R1||Lost|
|11/02/13||C Wozniacki||WTA Qatar Total Open||R1||Lost|
|16/01/13||J Craybas & C Scheepers||Australian Open||R1||Lost|
|01/09/12||N Grandin & V Uhlirova||US Open||R2||Lost|
|30/08/12||S Crawford & A Kiick||US Open||R1||Won|
The stats behind Federer's success
Sky Sports have been delving in the archive books and crunching the numbers in order to find out the secret of Roger Federer's success.
VOTE: Who is the G.O.A.T?
Roger Federer claimed a 20th Grand Slam title at the Australian Open and then became the oldest-ever world No 1 - but is he the greatest sportsperson of all time?
Federer's career in numbers
Roger Federer became the oldest world No 1 in tennis history with victory against Robin Haase at the ABN Amro World Tennis Tournament in Rotterdam.