Records held by Roger Federer
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In the period of 27 majors, he won 16 Grand Slam titles
He won five Grand Slam titles in a row at two different tournaments: Wimbledon and the US Open.
Between Wimbledon 2004 and the Australian Open 2010, he reached 23 Grand Slam semi-finals in a row. The next best streak is a ten-game run.
Between 2003 and 2005, he won 24 straight finals.
He had a 247-15 match record between 2004 and 2006.
In 2006, 2007, and 2009, he reached all four Grand Slam finals in the same season three times.
He was the World No. 1 for 237 weeks in a row, spanning four years. 160 weeks was the next best streak.
At every Grand Slam, he's in the top seven in terms of winning percentage, and he's in the top six in terms of match wins.
He set a record by winning 36 straight sets at the Grand Slams between 2006 and 2007.
At the Masters 1000 tournaments, he has a record of 241 wins.