Florian Mayer was the defending champion but chose not to defend his title.

Sergiy Stakhovsky won the title after defeating Matteo Berrettini 6–7^(4–7), 7–6^(8–6), 6–3 in the final.

	Semifinals							Final
		Aldin Šetkić	2	4
		Matteo Berrettini	6	6
									Matteo Berrettini	77	66	3
								3	Sergiy Stakhovsky	64	78	6
	3	Sergiy Stakhovsky	4	6	7
		Stefanos Tsitsipas	6	4	5

	First round							Second round							Quarterfinals							Semifinals
	1	B Kavčič	6	6
	Q	E Karlovskiy	4	4				1	B Kavčič	3	66
	WC	T Kočevar-Dešman	2	77	4				A Šetkić	6	78
		A Šetkić	6	64	6											A Šetkić	64	6	6
	Q	Lj Čelebić	3	3												P Martínez	77	4	4
		R Ortega Olmedo	6	6					R Ortega Olmedo	6	0	3
		P Martínez	1	6	7				P Martínez	4	6	6
	8	J Kovalík	6	3	5																		A Šetkić	2	4
	4	L Lacko	4	0r																			M Berrettini	6	6
	WC	Jaime Fermosell Delgado	6	3				WC	J Fermosell Delgado	3	2
		D Popko	3	3					I Ivashka	6	6
		I Ivashka	6	6												I Ivashka	4	4
		L Giustino	6	3	4											M Berrettini	6	6
		M Berrettini	3	6	6				M Berrettini	78	6
		A Balázs	5	0				7	A Menéndez Maceiras	66	1
	7	A Menéndez Maceiras	7	6

	First round							Second round							Quarterfinals							Semifinals
	6	F Krajinović	6	6
		L Rosol	4	2				6	F Krajinović	6	6
		G Žemlja	6	6					G Žemlja	2	3
	WC	Grega Boh	1	2											6	F Krajinović	1	6	3
	Q	A Olivetti	6	6											3	S Stakhovsky	6	3	6
	SE	G Granollers	4	3				Q	A Olivetti	2	2
	Alt	M Viola	63	2				3	S Stakhovsky	6	6
	3	S Stakhovsky	77	6																		3	S Stakhovsky	4	6	7
	5	E Gerasimov	5	3																			S Tsitsipas	6	4	5
		L Vanni	7	6					L Vanni	6	3	4
		A de Minaur	2	3					S Tsitsipas	3	6	6
		S Tsitsipas	6	6												S Tsitsipas	77	78
	WC	Sven Lah	6	6											Q	F Škugor	63	66
		R Ramírez Hidalgo	4	4				WC	S Lah	62	3
	Q	F Škugor	6	3				Q	F Škugor	77	6
	2	P Gojowczyk	3	1r

• Main draw
• Qualifying draw