Roger Federer, Novak Djokovic and Serena Williams are all in action on Friday as the U.S. Open moves into the third round.The Swiss, a five-time winner at Flushing Meadows, plays Great Britain’s Dan Evans in the first match of the day on center court. Evans, the British men’s number two, beat No. 25 seed Lucas Pouille 6-4 6-3 6-7 (4-7) 6-4.Federer has dropped the first set in both of his first two matches but it would be a major surprise to see him lose to the 29-year-old, who has never made it past the third round at the U.S. Open.Djokovic, meanwhile, faces American Denis Kudla on Friday evening. The world No. 1 battled through a shoulder injury to defeat Argentina’s Juan Ignacio Londero 6-4 7-6 (7-3) 6-1, despite losing his serve five times.Williams’ quest for a record-equaling 24th Grand Slams singles title sees her take on Karolina Muchova of the Czech Republic shortly after the end of Federer’s third round match against Evans.In the second round, Williams beat fellow American Caty McNally 5-7, 6-3, 6-1 to avert what would have been her earliest loss at the U.S. Open but looked uncharacteristically sluggish in the first set.Meanwhile, the second round was…