Roger Federer plays his first-round match at the U.S. Open against Marinko Matosevic . World No . 1 When organizers went against the world rankings and named Novak Djokovic as the top seed instead of Rafael Nadal , who was pushed down to No . 2 , it helped the former . Novak Djokovic begins against a young Argentine , Diego Schwartzman . Serena Williams starts against Taylor Townsend and is in Ana Ivanovic 's quarter . TL;DR
Roger Federer plays his first-round match at the U.S. Open against Marinko Matosevic . World No . 1 Novak Djokovic begins against a young Argentine , Diego Schwartzman . Serena Williams starts against Taylor Townsend and is in Ana Ivanovic 's quarter . TL;DR