Roger Federer (born 8 August 1981) is a Swiss professional tennis player. As of 21 June 2010, he is ranked World No. 2 by the Association of Tennis Professionals (ATP). He previously held the number one position for a record 237 consecutive weeks and 285 total weeks, one week behind record holder Pete Sampras.

Considered by many to be the greatest tennis player of all time, Federer has won a male record 16 Grand Slam singles titles. He is the most recent of six male players to capture the career Grand Slam, one of three (with Rod Laver and Andre Agassi) to do so during the Open Era and one of two (with Agassi) to do so on three different surfaces (clay, grass and hard courts). Federer has appeared in an unprecedented 22 career Grand Slam finals during his career. He holds the record of reaching the semi-finals or better of 23 consecutive Grand Slam tournaments over five and a half years from 2004 Wimbledon Championships - 2010 Australian Open. Federer also holds the record of reaching 10 consecutive Grand Slam finals and appeared in 18 of 19 over four and a half years from 2005 Wimbledon Championships - 2010 Australian Open, excluding the 2008 Australian Open. Federer has won 4 ATP World Tour Finals and 16 ATP Masters Series tournaments. He also won the Olympic Gold Medal in doubles with his compatriot Stanislas Wawrinka at the 2008 Summer Olympic Games.

As a result of Federer's successes in tennis, he was named the Laureus World Sportsman of the Year for four consecutive years (2005–2008). He is often referred to as The Federer Express or abbreviated to Fed Express, the Swiss Maestro or simply Maestro