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2011 U.S. Men's Clay Court Championships – Singles
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Juan Ignacio Chela was the defending champion, but could not defend his title since he withdrew from the tournament for personal reasons.
In the final match, Ryan Sweeting claimed the title, defeating Kei Nishikori 6–4, 7–6(7–3).
== Seeds ==
The top four seeds received a bye into the second round.
== Draw ==
Key
=== Finals ===
=== Top half ===
=== Bottom half ===
== References ==
Main draw
Qualifying draw