See main article: 2013 US Open (tennis).
Rafael Nadal defeated Novak Djokovic in the final, 6–2, 3–6, 6–4, 6–1 to win the men's singles tennis title at the 2013 US Open. It was his second US Open title and 13th major title overall, moving him to third place on the all time men's singles major titles list, past Roy Emerson.[1] This marked the third time in four years (following 2010 and 2011) that Nadal and Djokovic contested the final. With the win, Nadal became the third player to win the Summer Slam (having also won Canada and Cincinnati).
Andy Murray was the defending champion, but lost in the quarterfinals to Stanislas Wawrinka.
Djokovic and Nadal were in contention for the world No. 1 singles ranking.[2] Djokovic retained the top position by reaching the final.[3]
Roger Federer's streak of nine consecutive US Open quarterfinals ended when he lost to Tommy Robredo in the fourth round. Federer matched Wayne Ferreira's all-time record on his 56th consecutive major main draw appearance. This was also the last major for former world No. 4 James Blake and the last US Open appearance for former world No. 3 Nikolay Davydenko.
See also: 1 and 1. 
Novak Djokovic (final)
See also: 2 and 8. 
Rafael Nadal (champion)
See also: 3 and 3. 
Andy Murray (quarterfinals)
See also: 4 and 6. David Ferrer (quarterfinals)
See also: 5 and 4. 
Tomáš Berdych (fourth round)
See also: 6 and 2. 
Juan Martín del Potro (second round)
See also: 7 and 7. Roger Federer (fourth round)
See also: 8 and 5. 
Richard Gasquet (semifinals)
See also: 9 and 4. Stan Wawrinka (semifinals)
See also: 10 and 5. 
Milos Raonic (fourth round)
See also: 11 and 7. 
Kei Nishikori (first round)
See also: 12 and 2. Tommy Haas (third round)
See also: 13 and 8. 
John Isner (third round)
See also: 14 and 6. 
Jerzy Janowicz (first round)
See also: 15 and 3. Nicolás Almagro (first round)
See also: 16 and 1. 
Fabio Fognini (first round)
See also: 17 and 4. Kevin Anderson (second round)
See also: 18 and 6. Janko Tipsarević (fourth round)
See also: 19 and 7. Tommy Robredo (quarterfinals)
See also: 20 and 3. Andreas Seppi (third round)
See also: 21 and 2. 
Mikhail Youzhny (quarterfinals)
See also: 22 and 8. Philipp Kohlschreiber (fourth round)
See also: 23 and 5. Feliciano López (third round)
See also: 24 and 1. Benoît Paire (first round)
See also: 25 and 1. Grigor Dimitrov (first round)
See also: 26 and 7. Sam Querrey (second round)
See also: 27 and 8. Fernando Verdasco (first round)
See also: 28 and 3. Juan Mónaco (first round, retired)
See also: 29 and 2. 
Jürgen Melzer (first round)
See also: 30 and 6. Ernests Gulbis (first round)
See also: 31 and 4. Julien Benneteau (third round)
See also: 32 and 5. Dmitry Tursunov (third round, retired)
See main article: 2013 US Open – Men's singles qualifying.