Singles
2018 Brasil Open
Champion	Fabio Fognini
Runner-up	Nicolás Jarry
Score	1–6, 6–1, 6–4
Draw	28 (4 Q / 3 WC )
Seeds	8

Pablo Cuevas was the three-time defending champion, but lost in the semifinals to Fabio Fognini.

Fognini went on to win the title, defeating Nicolás Jarry in the final, 1–6, 6–1, 6–4.

Seeds

The top four seeds receive a bye into the second round.

Draw

Finals

	Semifinals							Final
		Nicolás Jarry	65	6	6
		Horacio Zeballos	77	4	4
									Nicolás Jarry	6	1	4
								2	Fabio Fognini	1	6	6
	3	Pablo Cuevas	4	2
	2	Fabio Fognini	6	6

Top half

	First round							Second round							Quarterfinals							Semifinals
								1	A Ramos Viñolas	6	6
	Q	G Clezar	6	1	7			Q	G Clezar	3	4
	WC	T Monteiro	3	6	5										1	A Ramos Viñolas	78	4	63
		N Jarry	6	1	7											N Jarry	66	6	77
		D Lajović	4	6	5				N Jarry	62	6	77
	WC	C Moutet	6	1	2			6	G Pella	77	4	62
	6	G Pella	4	6	6																		N Jarry	65	6	6
																							H Zeballos	77	4	4
								4	G Monfils	3	6	3
		T Bellucci	62	6	3				H Zeballos	6	3	6
		H Zeballos	77	3	6											H Zeballos	63	6	6
		N Kicker	77	6												R Dutra Silva	77	2	4
		V Estrella Burgos	65	3					N Kicker	4	2
		R Dutra Silva	6	6					R Dutra Silva	6	6
	7	T Sandgren	0	4

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	5	L Mayer	5	712	77
		G Elias	7	610	65			5	L Mayer	7	6
		C Berlocq	3	6	6				C Berlocq	5	4
	WC	T Seyboth Wild	6	3	2										5	L Mayer	2	715	65
	Q	S Ofner	6	6											3	P Cuevas	6	613	77
		M Cecchinato	3	3				Q	S Ofner	4	64
								3	P Cuevas	6	77
																						3	P Cuevas	4	2
	8	F Delbonis	6	6																		2	F Fognini	6	6
		R Carballés Baena	4	4				8	F Delbonis	63	6	4
		G Melzer	4	6	3				G García López	77	4	6
		G García López	6	3	6											G García López	4	2
	Q	R Olivo	6	66	5										2	F Fognini	6	6
	Q	J Domingues	2	78	7			Q	J Domingues	5	1
								2	F Fognini	7	6

Qualifying

Qualifying draw

First qualifier

	First round							Qualifying competition
	1	Sebastian Ofner	6	6
	WC	Rafael Matos	3	4
								1	Sebastian Ofner	4	6	6
									Pedro Cachin	6	2	4
		Pedro Cachin	77	4
	7	Daniel Muñoz de la Nava	63	1r

Second qualifier

	First round							Qualifying competition
	2	Tommy Robredo	65	4
		Pedro Sakamoto	77	6
									Pedro Sakamoto	2	1
								5	Guilherme Clezar	6	6
	WC	Fernando Yamacita	1	64
	5	Guilherme Clezar	6	77

Third qualifier

	First round							Qualifying competition
	3	Renzo Olivo	6	6
		Ivan Gakhov	4	3
								3	Renzo Olivo	6	77
								8	Roberto Quiroz	0	65
		Daniel Dutra da Silva	6	2	3
	8	Roberto Quiroz	4	6	6

Fourth qualifier

	First round							Qualifying competition
	4	João Domingues	6	6
		José Hernández-Fernández	2	4
								4	João Domingues	6	6
									Ivan Nedelko	2	1
		Ivan Nedelko	77	2
	6	João Souza	65	1r

References

• Main draw
• Qualifying draw