Singles
2009 St. Petersburg Open
Final
Champion	Sergiy Stakhovsky
Runner-up	Horacio Zeballos
Score	2–6, 7–6(10–8), 7–6(9–7)
Events
Singles Doubles
← 2008 · St. Petersburg Open · 2010 →

Andy Murray was the defending champion, but he chose not to compete this year.

Sergiy Stakhovsky won in the final over Horacio Zeballos 2–6, 7–6^(10–8), 7–6^(9–7).

	Semifinals							Final
		Marat Safin	4	6	4
	Q	Sergiy Stakhovsky	6	4	6
								Q	Sergiy Stakhovsky	2	710	79
								8	Horacio Zeballos	6	68	67
	8	Horacio Zeballos	79	6
		Igor Kunitsyn	67	3

	First round							Second round							Quarterfinals							Semifinals
	1	M Youzhny	6	6
		A Golubev	3	2				1	M Youzhny	2	1r
		D Istomin	6	6					D Istomin	6	2
		R Schüttler	4	4												D Istomin	0	64
		M Safin	77	6												M Safin	6	77
		R Gasquet	65	4					M Safin	6	0
		P Starace	4	2				5	I Andreev	3	1r
	5	I Andreev	6	6																			M Safin	4	6	4
	3	V Troicki	64	6	4																	Q	S Stakhovsky	6	4	6
		K Beck	77	4	6				K Beck	4	1r
	WC	S Vovk	3	2					B Phau	6	2
		B Phau	6	6												B Phau	2	5
		M Granollers	77	66	4										Q	S Stakhovsky	6	7
	WC	A Kuznetsov	64	78	6			WC	A Kuznetsov	1	4
	Q	S Stakhovsky	6	6				Q	S Stakhovsky	6	6
	6	E Korolev	4	3

	First round							Second round							Quarterfinals							Semifinals
	8	H Zeballos	711	6
	Q	Y Schukin	69	3				8	H Zeballos	6	6
	Q	O Dolgopolov Jr.	6	1				Q	O Dolgopolov Jr.	3	1
		R Ginepri	2	0r											8	H Zeballos	710	6
		E Gulbis	6	77												E Gulbis	68	4
		F Mayer	3	63					E Gulbis	79	6
	Q	P-A Luncanu	2	2				4	J Chardy	67	3
	4	J Chardy	6	6																		8	H Zeballos	79	6
	7	P Cuevas	4	3																			I Kunitsyn	67	3
		I Kunitsyn	6	6					I Kunitsyn	6	6
	WC	M Elgin	6	6				WC	M Elgin	2	3
	SE	M Kukushkin	3	3												I Kunitsyn	6	3	78
		F Fognini	4	1											2	V Hănescu	3	6	66
	SE	I Marchenko	6	6				SE	I Marchenko	3	4
		T Gabashvili	1	2				2	V Hănescu	6	6
	2	V Hănescu	6	6

• Main Draw
• Qualifying Draw