Singles
2011 AON Open Challenger
Champion	Martin Kližan
Runner-up	Leonardo Mayer
Score	6–3, 6–1

Fabio Fognini was the defending champion but decided not to participate.
Martin Kližan won the title after defeating Leonardo Mayer 6–3, 6–1 in the final.

Seeds

Draw

Finals

	Semifinals							Final
	8	Frederico Gil	77	4	3
	6	Martin Kližan	63	6	6
								6	Martin Kližan	6	6
									Leonardo Mayer	3	1
		Leonardo Mayer	7	5
	9	Horacio Zeballos	5	1

Top half

	First round							Second round							Quarterfinals							Semifinals
	1/WC	P Andújar	5	6	62
		A di Mauro	7	3	77				A di Mauro	4	4
		A Giannessi	6	6					A Giannessi	6	6
	Q	B Balleret	1	2												A Giannessi	5	1
		K Mesaroš	6	6											8	F Gil	7	6
		S Galvani	1	4					K Mesaroš	1	4
	WC	Edoardo Eremin	4	3				8	F Gil	6	6
	8	F Gil	6	6																		8	F Gil	77	4	3
	4	F Volandri	1	6	6																	6	M Kližan	63	6	6
	WC	Andea Basso	6	3	1			4	F Volandri	0	1r
		G Naso	0	6	6				G Naso	6	4
		W Trusendi	6	3	3											G Naso	61	3
		F Nielsen	6	6											6	M Kližan	77	6
		I Bozoljac	1	2					F Nielsen	2	4
	Q	Michael Linzer	1	2				6	M Kližan	6	6
	6	M Kližan	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	5	A Golubev	6	4	4
		M Zverev	4	6	6				M Zverev	4	0
		L Mayer	6	77					L Mayer	6	6
		D Brown	3	65												L Mayer	6	77
	WC	Francesco Picco	2	4											3	R Machado	3	61
	Alt	D Giorgini	6	6				Alt	D Giorgini	6	3	4
	LL	R Olivo	1	2				3	R Machado	3	6	6
	3	R Machado	6	6																			L Mayer	7	6
	7	D Junqueira	6	3	5																	9	H Zeballos	5	1
	Q	T Fabbiano	2	6	7			Q	T Fabbiano	5	6	6
		M Crugnola	6	6					M Crugnola	7	1	4
	Q	Guillermo Durán	2	3											Q	T Fabbiano	3	1
		T Nieminen	4	1											9	H Zeballos	6	6
	LL	Enrico Burzi	6	6				LL	E Burzi	4	2
	Alt	B Pašanski	3	77	66			9	H Zeballos	6	6
	9	H Zeballos	6	64	78

References

• Main Draw
• Qualifying Draw