Singles
2011 Natomas Men's Professional Tennis Tournament
Champion	Ivo Karlović
Runner-up	James Blake
Score	6–4, 3–6, 6–4

John Millman was the defending champion, but did not participate.
Ivo Karlović won the title, defeating James Blake 6–4, 3–6, 6–4 in the final.

Seeds

Draw

Finals

	Semifinals							Final
	1	James Blake	6	7
		Alex Kuznetsov	2	5
								1	James Blake	4	6	4
								2	Ivo Karlović	6	3	6
	3/WC	Sam Querrey	66	6	4
	2	Ivo Karlović	78	3	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	J Blake	6	7
		A Delić	4	5				1	J Blake	6	6
		C Guccione	6	6					C Guccione	4	4
		JS Cabal	3	4											1	J Blake	6	6
		R Borvanov	3	6	6										WC	J Sock	4	2
	Q	S Johnson	6	4	3				R Borvanov	1	6	3
	WC	J Sock	6	77				WC	J Sock	6	3	6
	8	J Ward	3	63																		1	J Blake	6	7
	4	B Reynolds	6	2	7																		A Kuznetsov	2	5
		C Salamanca	3	6	5			4	B Reynolds	6	5	6
		F Nielsen	6	5	6				F Nielsen	2	7	2
	WC	N Monroe	2	7	4										4	B Reynolds	60	3
		S Greul	6	4	4											A Kuznetsov	77	6
		A Kuznetsov	4	6	6				A Kuznetsov	6	6
	Q	B Strode	3	4				6	I van der Merwe	4	2
	6	I van der Merwe	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	7	B Phau	6	6
	SE	R Farah	1	4				7	B Phau	4	64
		U Ignatik	3	6	6				U Ignatik	6	77
		F Wolmarans	6	3	4											U Ignatik	5	69
		D Gremelmayr	6	3	6										3/WC	S Querrey	7	711
	LL	J Baker	1	6	4				D Gremelmayr	77	61	3
		L Grigelis	4	77	2			3/WC	S Querrey	64	77	6
	3/WC	S Querrey	6	65	6																	3/WC	S Querrey	66	6	4
	5	V Pospisil	77	62	3																	2	I Karlović	78	3	6
		T de Bakker	65	77	6				T de Bakker	6	2	6
		T Smyczek	2	5				Q	P-L Duclos	4	6	4
	Q	P-L Duclos	6	7												T de Bakker	4	62
	Q	M Venus	2	4											2	I Karlović	6	77
		V Estrella	6	6					V Estrella	3	2
		M Fischer	3	6	68			2	I Karlović	6	6
	2	I Karlović	6	3	710

References

• Main Draw
• Qualifying Draw