Roger Federer plays a sport.
The ATP Finals is the second highest tier of men 's tennis tournament after the four Grand Slam tournaments . The Grand Slam tournaments , also called majors , are the four most-important annual tennis events . An Olympic medal is awarded to successful competitors at one of the Olympic Games . Roger Federer ( born 8 August 1981 ) is a Swiss professional tennis player . He also won the Olympic gold medal in doubles with his compatriot Stan Wawrinka at the 2008 Summer Olympic Games and the Olympic silver medal in singles at the 2012 Summer Olympic Games .