2011 U.S. Men's Clay Court Championships – Singles

Juan Ignacio Chela was the defending champion, but could not defend his title since he withdrew from the tournament for personal reasons.
Ryan Sweeting claimed the title, defeating Kei Nishikori 6–4, 7–6^(7–3) in the final match.

Seeds

The top four seeds received a bye into the second round.

Draw

Key

Finals

Top half

Bottom half

References

• Main draw
• Qualifying draw