Singles
2011 U.S. Men's Clay Court Championships
Final
Champion	Ryan Sweeting
Runner-up	Kei Nishikori
Score	6–4, 7–6(7–3)
Events
Singles Doubles
← 2010 · U.S. Men's Clay Court Championships · 2012 →

Juan Ignacio Chela was the defending champion, but could not defend his title since he withdrew from the tournament for personal reasons.^[1]
Ryan Sweeting claimed the title, defeating Kei Nishikori 6–4, 7–6^(7–3) in the final match.

The top four seeds received a bye into the second round.^[1]

	Semifinals							Final
	6	Kei Nishikori	6	7
	7	Pablo Cuevas	3	5
								6	Kei Nishikori	4	63
								WC	Ryan Sweeting	6	77
	Q	Ivo Karlović	63	3
	WC	Ryan Sweeting	77	6

	First round							Second round							Quarterfinals							Semifinals
								1	M Fish	6	6
		A Ramos	6	7					A Ramos	3	4
		B Dabul	4	5											1	M Fish	3	2
		I Andreev	6	6											6	K Nishikori	6	6
		M Russell	2	3					I Andreev	3	3
	Q	F Škugor	3	2				6	K Nishikori	6	6
	6	K Nishikori	6	6																		6	K Nishikori	6	7
																						7	P Cuevas	3	5
								3	G García López	6	6
		R Kendrick	2	1					S Devvarman	4	1
		S Devvarman	6	6											3	G García López	6	64	3
	WC	J Blake	63	6	6										7	P Cuevas	1	77	6
		C Berlocq	77	3	4			WC	J Blake	5	1
		R Mello	2	0				7	P Cuevas	7	6
	7	P Cuevas	6	6

	First round							Second round							Quarterfinals							Semifinals
	5	B Becker	65	4
	Q	I Karlović	77	6				Q	I Karlović	6	6
		M Zverev	61	2					I Kunitsyn	4	1
		I Kunitsyn	77	6											Q	I Karlović	77	62	711
	WC	R Harrison	4	3											4	J Isner	62	77	69
		H Zeballos	6	6					H Zeballos	5	3
								4	J Isner	7	6
																						Q	I Karlović	63	3
	8	G Dimitrov	6	6																		WC	R Sweeting	77	6
		R Schüttler	0	2				8	G Dimitrov	64	3
		T Gabashvili	6	77					T Gabashvili	77	6
	Q	P Capdeville	4	64												T Gabashvili	6	3	1
	Q	T Smyczek	2	2											WC	R Sweeting	3	6	6
	WC	R Sweeting	6	6				WC	R Sweeting	3	77	6
								2	S Querrey	6	65	3

• Main draw
• Qualifying draw