Roger Federer (born August 8, 1981) is a Swiss tennis professional, currently ranked World No. 1. Many experts and many of his own tennis peers believe Federer may be the best player in the history of the game.

Federer has won eleven Grand Slam men's singles titles in 33 appearances (all eleven coming in a record 17 consecutive appearances), three Tennis Masters Cup titles, and 13 ATP Masters Series titles. In 2004, the Swiss became the first man since 1988 to win three of four Grand Slam singles tournaments in the same year: the Australian Open, Wimbledon and U.S. Open. In 2006, he became the first and only male player to repeat this feat in the Open Era and also the first man in the Open Era to win at least ten singles tournaments in three consecutive years (2004 to 2006). He is also the only player ever to have won both the Wimbledon and U.S. Open singles titles in three consecutive years. In 2007, when Federer won his third Australian Open title, he became the only male player ever to have won three separate Grand Slam tournaments at least three times.

Federer has been ranked No. 1 in the world since February 2, 2004, and holds the all-time record for most consecutive weeks as the top-ranked male player. On April 2, 2007, he was named Laureus World Sportsman of the Year for a record third consecutive time. On July 8, 2007, Federer equaled Björn Borg's open era record of five consecutive wins at Wimbledon.

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