 At the French Open , Federer won his 700th tour match and 150th tour match on clay . However , he failed to reach a Grand Slam semifinal for the first time since the 2004 French Open , losing to <unk> in the quarterfinals and <unk> his No. 1 ranking , having been just one week away from <unk> Pete Sampras 's record of 286 weeks as world No. 1 . In a huge upset at Wimbledon , Federer lost in the quarterfinals to Tomáš Berdych and fell to No. 3 in the rankings for the first time in 6 years and 8 months . 
