2023 Curitiba Challenger – Singles

Agustín Velotti was the defending champion from when the tournament was last held in 2016^[1] but didn't defend his title as he retired from professional tennis.

Singles
2023 Curitiba Challenger
Champion	Hugo Dellien
Runner-up	Oliver Crawford
Score	7–6(8–6), 4–6, 7–6(7–1)

Main article: 2023 Curitiba Challenger

Hugo Dellien won the title after defeating Oliver Crawford 7–6^(8–6), 4–6, 7–6^(7–1) in the final.

Seeds

1. Juan Manuel Cerúndolo (first round)
2. Thiago Agustín Tirante (second round)
3. Francisco Comesaña (second round)
4. Vít Kopřiva (first round)
5. Hugo Dellien (champion)
6. Felipe Meligeni Alves (second round)
7. Mariano Navone (withdrew)
8. Camilo Ugo Carabelli (second round)
9. Luciano Darderi (semifinals)

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
	5	Hugo Dellien	65	6	6
		Guido Andreozzi	77	2	3
								5	Hugo Dellien	78	4	77
									Oliver Crawford	66	6	61
	9	Luciano Darderi	2	3
		Oliver Crawford	6	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	JM Cerúndolo	3	5
	WC	Wilson Leite	6	7				WC	W Leite	63	4
	Q	M Alves	77	3	4				S Rodríguez Taverna	77	6
		S Rodríguez Taverna	62	6	6											S Rodríguez Taverna	2	3
		JL Reis da Silva	6	6											5	H Dellien	6	6
	Q	A Huertas del Pino	4	4					JL Reis da Silva	2	3
		E Ribeiro	4	4				5	H Dellien	6	6
	5	H Dellien	6	6																		5	H Dellien	65	6	6
	4	V Kopřiva	0	64																			G Andreozzi	77	2	3
		L Neumayer	6	77					L Neumayer	5	3
		RA Burruchaga	6	6					RA Burruchaga	7	6
	WC	Gustavo Ribeiro de Almeida	4	1												RA Burruchaga	4	5
	Q	Gilbert Klier Júnior	2	0												G Andreozzi	6	7
		G Andreozzi	6	6					G Andreozzi	6	77
	Q	D Dutra da Silva	66	1				8	C Ugo Carabelli	2	64
	8	C Ugo Carabelli	78	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	9	L Darderi	65	6	6
		JP Ficovich	77	2	1			9	L Darderi	6	6
	Q	P Boscardin Dias	65	2					R Olivo	4	4
		R Olivo	77	6											9	L Darderi	6	6
	WC	O Luz	6	7											WC	O Luz	4	0
		M Dellien	1	5				WC	O Luz	6	6
	Q	Nicolas Zanellato	4	4				3	F Comesaña	1	4
	3	F Comesaña	6	6																		9	L Darderi	2	3
	6	F Meligeni Alves	78	6																			O Crawford	6	6
		B Kuzuhara	66	4				6	F Meligeni Alves	6	5	4
		O Crawford	6	6					O Crawford	3	7	6
		JB Torres	1	3												O Crawford	78	2	6
	Alt	C Taberner	2	6	66											D Svrčina	66	6	1
		D Svrčina	6	2	78				D Svrčina	6	78
		M Pucinelli de Almeida	2	6	1			2	TA Tirante	4	66
	2	TA Tirante	6	3	6