Roger Federer, the Swiss professional tennis player, is ranked number 6 in the world by the Association of Tennis Professionls. He has won 20 Grand Slam men's singles titles, an all-time record shared with Rafael Nadal. He has been number 1 in the world, according to the ATP, for a total of 310 weeks, including a record 237 consecutive weeks, finishing the year at number 1 five times. Federer has won 103 ATP singles titles, the second most of all-time behind Jimmy Connors and including a record six ATP finals.