Roger Federer is a Swiss professional tennis player. He was rated world No. 1 by the Association of Tennis Professionals for 310 weeks, including a record 237 consecutive weeks, and has spent as the year-end No. 1 five times. He has won 103 ATP singles titles, the second-most of all time after Jimmy Connors, including 20 Grand Slam titles, a record eighth men’s singles Wimbledon titles, and a record six year-end championships. Switzerland’s Federer is an all-time great and one of the most consistent players in tennis history. Injuries have limited his appearances in recent years.