Singles
2020 Sibiu Open
Final
Champion	Marc-Andrea Hüsler
Runner-up	Tomás Martín Etcheverry
Score	7–5, 6–0
Events
Singles Doubles
← 2019 · Sibiu Open · 2021 →

Danilo Petrović was the defending champion^[1] but chose not to defend his title.

Marc-Andrea Hüsler won the title after defeating Tomás Martín Etcheverry 7–5, 6–0 in the final.

	Semifinals							Final
	Q	Carlos Gómez-Herrera	65	78	4
	3	Marc-Andrea Hüsler	77	66	6
								3	Marc-Andrea Hüsler	7	6
									Tomás Martín Etcheverry	5	0
	4	Francisco Cerúndolo	3	0
		Tomás Martín Etcheverry	6	6

	First round							Second round							Quarterfinals							Semifinals
	1	A Rinderknech	7	6
		V Durasovic	5	3				1	A Rinderknech	3	6	64
		J Härteis	7	6					J Härteis	6	3	77
	WC	ND Ionel	5	2												J Härteis	3	710	2
		V Kopřiva	2	3											Q	C Gómez-Herrera	6	68	6
	Q	C Gómez-Herrera	6	6				Q	C Gómez-Herrera	3	77	6
		C Denolly	6	5	6				C Denolly	6	64	3
	5	E Karlovskiy	3	7	0																	Q	C Gómez-Herrera	65	78	4
	3	M-A Hüsler	6	77																		3	M-A Hüsler	77	66	6
		L Miedler	4	61				3	M-A Hüsler	6	6
		O Roca Batalla	2	4					R Ortega Olmedo	2	4
		R Ortega Olmedo	6	6											3	M-A Hüsler	6	5	6
		B Gojo	7	6												B Gojo	4	7	4
		N Serdarušić	5	4					B Gojo	6	61	6
		MT Barrios Vera	6	6					MT Barrios Vera	1	77	4
	6	A Menéndez Maceiras	2	3

	First round							Second round							Quarterfinals							Semifinals
	7	M Jaziri	6	6
		K Żuk	4	2				7	M Jaziri	6	77
		O Luz	6	3	6				O Luz	3	63
	WC	VV Cornea	1	6	2										7	M Jaziri	2	1
	Q	Elmar Ejupovic	3	62											4	F Cerúndolo	6	6
	PR	Í Cervantes	6	77				PR	Í Cervantes	79	3	4
	Q	Matthieu Perchicot	4	3				4	F Cerúndolo	67	6	6
	4	F Cerúndolo	6	6																		4	F Cerúndolo	3	0
	8	Shuichi Sekiguchi	7	78																			TM Etcheverry	6	6
	WC	D Dima	5	66				8	S Sekiguchi	2	3
	Alt	F Meligeni Alves	6	6				Alt	F Meligeni Alves	6	6
	Q	E Kırkın	4	3											Alt	F Meligeni Alves	3	0
		S Mukund	4	65												TM Etcheverry	6	6
		JM Cerúndolo	6	77					JM Cerúndolo	4	67
		TM Etcheverry	77	4	77				TM Etcheverry	6	79
	2	Q Halys	63	6	62

• Main draw
• Qualifying draw