When are you lucky, and when are you just too good? The 2011 U.S. Open semifinal between Novak Djokovic and Roger Federer set off a debate on the subject that would rage for months—if it ever ended.

Roger Federer dropped the first set he played at this year's U.S. Open — against someone named Nagal. No, not Nadal. Nagal. Federer shrugged off that slow start and came back for a 4-6, 6-1, 6-2, 6-4 ...

MELBOURNE, Australia (AP) — As Roger Federer cried while accepting his 20th Grand Slam title, Rod "Rocket" Laver took a chance to snap a picture for posterity. Federer has won more major singles ...