2013 U.S. National Indoor Tennis Championships – Men's singles explained

See main article: 2013 U.S. National Indoor Tennis Championships.

Jürgen Melzer was the defending champion, but lost in the first round to Igor Sijsling.
Kei Nishikori won the title, defeating Feliciano López in the final, 6–2, 6–3.

Draw

Bottom half

Qualifying

Lucky losers

1. Michael Russell

Draw

Fourth qualifier

References

• Main Draw
• Qualifying Draw