Singles
2009 AON Open Challenger
Final
Champion	Alberto Martín
Runner-up	Carlos Berlocq
Score	6–3, 6–3
Events
Singles Doubles
← 2008 · AON Open Challenger · 2010 →

Fabio Fognini chose to not defend his 2009 title.
Alberto Martín defeated Carlos Berlocq 6–3, 6–3 in the final.

	Semifinals							Final
	5	Steve Darcis	6	5	3
	Q	Carlos Berlocq	3	7	6
								Q	Carlos Berlocq	3	3
								4	Alberto Martín	6	6
	4	Alberto Martín	6	6
	2	Simon Greul	1	4

	First round							Second round							Quarterfinals							Semifinals
	1	A Montañés	2	7	2
		Y Schukin	6	65	1r			1	A Montañés	6	3	4
		E Schwank	4	6	5				J-M Aranguren	4	6	6
		J-M Aranguren	6	0	7											J-M Aranguren	3	0	r
		K Anderson	3	6	4										5	S Darcis	6	3
	ALT	B Pašanski	6	1	6			ALT	B Pašanski	63	3
		O Dolgopolov Jr.	4	6	5			5	S Darcis	7	6
	5	S Darcis	6	3	7																	5	S Darcis	6	5	3
	3	E Korolev	1	6	6																	Q	C Berlocq	3	7	6
	ALT	S Galvani	6	1	4			3	E Korolev	3	6	7
	WC	D Bracciali	4	6	3				I Dodig	6	1	66
		I Dodig	6	2	6										3	E Korolev	1	63
	Q	A Smirnov	6	63	4										Q	C Berlocq	6	7
		A Sidorenko	4	7	6				A Sidorenko	63	65
	Q	C Berlocq	6	7				Q	C Berlocq	7	7
	8	L Ouahab	3	5

	First round							Second round							Quarterfinals							Semifinals
	6	F Cipolla	5	4
		H Levy	7	6					H Levy	6	4	6
		L Recouderc	6	6					L Recouderc	4	6	2
	Q	R Valent	3	2												H Levy	3	3
		L Rosol	5	6	6										4	A Martín	6	6
		M Crugnola	7	4	3				L Rosol	6	613	2
		T Tenconi	6	2	2			4	A Martín	0	7	6
	4	A Martín	2	6	6																	4	A Martín	6	6
	7	D Brands	61	6	7																	2	S Greul	1	4
	WC	G Dimitrov	7	4	62			7	D Brands	6	6
		A Veić	6	4	1			WC	T Fabbiano	4	4
	WC	T Fabbiano	3	6	6										7	D Brands	3	4
	Q	W Trusendi	7	6											2	S Greul	6	6
		J-R Lisnard	5	4				Q	W Trusendi	6	0	63
		F Volandri	4	6	4			2	S Greul	3	6	7
	2	S Greul	6	2	6

• Main Draw
• Qualifying Draw