2023 Sibiu Open – Singles

Nerman Fatić was the defending champion^[1] and successfully defended his title after defeating Damir Džumhur 6–2, 6–4 in the final.

Singles
2023 Sibiu Open
Champion	Nerman Fatić
Runner-up	Damir Džumhur
Score	6–2, 6–4

Main article: 2023 Sibiu Open

Seeds

1. Zsombor Piros (semifinals)
2. Flavio Cobolli (semifinals)
3. Damir Džumhur (final)
4. Ivan Gakhov (quarterfinals)
5. Stefano Travaglia (quarterfinals)
6. Duje Ajduković (quarterfinals)
7. Alessandro Giannessi (first round, retired)
8. Nerman Fatić (champion)

Draw

Key

• Q = Qualifier
• WC = Wild card
• LL = Lucky loser
• Alt = Alternate
• ITF = ITF entry
• PR = Protected ranking
• SR = Special ranking
• SE = Special exempt
• JE = Junior exempt
• JR = Junior Accelerator Programme entrant
• CO = College Accelerator Programme entrant
• NG = Next Gen Accelerator Program entrant
• w/o = Walkover
• r = Retired
• d = Defaulted

Finals

	Semifinals							Final
	1	Zsombor Piros	2	6	1
	8	Nerman Fatić	6	1	6
								8	Nerman Fatić	6	6
								3	Damir Džumhur	2	4
	3	Damir Džumhur	7	6
	2	Flavio Cobolli	5	4

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	Z Piros	6	6
		N Sánchez Izquierdo	3	3				1	Z Piros	6	6
	Q	A Paulson	6	6				Q	A Paulson	3	4
		N Serdarušić	2	1											1	Z Piros	6	4	6
	Q	C Hemery	6	6											Q	C Hemery	3	6	1
		M Valkusz	1	1				Q	C Hemery	6	6
	WC	B Artnak	3					WC	B Artnak	4	2
	7	A Giannessi	0r																			1	Z Piros	2	6	1
	4	I Gakhov	6	4	7																	8	N Fatić	6	1	6
		C Tabur	1	6	5			4	I Gakhov	77	61	77
		Alexander Weis	6	4	6				A Weis	65	77	65
	Q	M Vrbenský	4	6	2										4	I Gakhov	1	6	2
		S Diez	2	5											8	N Fatić	6	2	6
		R Bonadio	6	7					R Bonadio	7	67	4
	Q	Vlad Andrei Dancu	4	4				8	N Fatić	5	79	6
	8	N Fatić	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	5	S Travaglia	77	6
	WC	Sebastian Gima	62	3				5	S Travaglia	7	6
		C Taberner	64	2					G Blancaneaux	5	3
		G Blancaneaux	77	6											5	S Travaglia	4	4
	Q	H Laaksonen	6	0	2										3	D Džumhur	6	6
		M Echargui	2	6	6				M Echargui	4	1
		ND Ionel	3	62				3	D Džumhur	6	6
	3	D Džumhur	6	77																		3	D Džumhur	7	6
	6	D Ajduković	3	6	6																	2	F Cobolli	5	4
		F Maestrelli	6	3	4			6	D Ajduković	4	6	6
		G Fonio	77	6					G Fonio	6	3	2
	WC	C Crețu	61	3											6	D Ajduković	2	3
	Q	FC Jianu	64	4											2	F Cobolli	6	6
		Edoardo Lavagno	77	6					E Lavagno	5	2
		S Caruso	77	4	4			2	F Cobolli	7	6
	2	F Cobolli	65	6	6