2018 AON Open Challenger – Singles

Stefanos Tsitsipas was the defending champion but chose not to defend his title.

Singles
2018 AON Open Challenger
Champion	Lorenzo Sonego
Runner-up	Dustin Brown
Final score	6–2, 6–1

Main article: 2018 AON Open Challenger

Lorenzo Sonego won the title after defeating Dustin Brown 6–2, 6–1 in the final.

Seeds

1. Benoît Paire (Withdrew)
2. Martin Kližan (Second round, retired)
3. Paolo Lorenzi (Second round)
4. Hubert Hurkacz (Quarterfinals)
5. Federico Delbonis (Semifinals)
6. Guido Andreozzi (First round)
7. Thiago Monteiro (First round)
8. Lorenzo Sonego (Champion)

Draw

Key

• Q = Qualifier
• WC = Wild Card
• LL = Lucky Loser
• Alt = Alternate
• SE = Special Exempt
• PR = Protected Ranking
• ITF = ITF entry
• JE = Junior Exempt
• w/o = Walkover
• r = Retired
• d = Defaulted

Finals

	Semifinals							Final
	5	Federico Delbonis	5	3
	8	Lorenzo Sonego	7	6
								8	Lorenzo Sonego	6	6
								WC	Dustin Brown	2	1
	WC	Dustin Brown	6	7^8
	LL	Thomaz Bellucci	3	6^6

Top half

	First Round							Second Round							Quarterfinals							Semifinals
	LL	JP Varillas	6	5	3
		S Travaglia	4	7	6				S Travaglia	6	6
		G Quinzi	6	4	3				V Galović	4	4
		V Galović	4	6	6											S Travaglia	3	6	6^1
	WC	Giovanni Fonio	6	6											5	F Delbonis	6	3	7^7
		G Elias	4	2				WC	G Fonio	1	3
		R Dutra Silva	6	4	3			5	F Delbonis	6	6
	5	F Delbonis	4	6	6																	5	F Delbonis	5	3
	4	H Hurkacz	6	1	6																	8	L Sonego	7	6
		A Arnaboldi	3	6	2			4	H Hurkacz	5	7	6
	Q	Z Piros	4	1^r					JI Londero	7	5	0
		JI Londero	6	4											4	H Hurkacz	6	3	6^1
	Q	A Avidzba	6	4	1										8	L Sonego	1	6	7^7
		A Vatutin	1	6	6				A Vatutin	4	6	5
		S Robert	1	2				8	L Sonego	6	4	7
	8	L Sonego	6	6

Bottom half

	First Round							Second Round							Quarterfinals							Semifinals
	6	G Andreozzi	5	6	0
	WC	A Basso	7	4	6			WC	A Basso	2	7	2
	WC	D Brown	6	7				WC	D Brown	6	5	6
		P Andújar	4	5											WC	D Brown	3	6	7^7
	Q	A Pellegrino	2	4											Alt	L Rosol	6	4	6^5
	Alt	L Rosol	6	6				Alt	L Rosol	7^7	6
		S Caruso	2	6	4			3	P Lorenzi	6^4	3
	3	P Lorenzi	6	3	6																	WC	D Brown	6	7^8
	7	T Monteiro	3	4																		LL	T Bellucci	3	6^6
		C Garín	6	6					C Garín	3	6	6
		S Napolitano	4	2				Q	S Nagal	6	3	4
	Q	S Nagal	6	6												C Garín	6^5	4
	LL	T Bellucci	7^8	6											LL	T Bellucci	7^7	6
		GM Moroni	6^6	3				LL	T Bellucci	3	7	4
	WC	F Baldi	0	2				2	M Kližan	6	5	0^r
	2	M Kližan	6	6

References

• Main Draw
• Qualifying Draw