2023 San Luis Open Challenger – Men's singles

Antoine Bellier was the defending champion^[1] but lost in the first round to Alexis Galarneau.

Men's singles
2023 San Luis Open Challenger
Champion	Tomás Barrios Vera
Runner-up	Dominik Koepfer
Score	7–6(8–6), 7–5

Main article: 2023 San Luis Open Challenger

Tomás Barrios Vera won the title after defeating Dominik Koepfer 7–6^(8–6), 7–5 in the final.^[2]

Seeds

1. James Duckworth (first round)
2. Antoine Bellier (first round)
3. Tomás Barrios Vera (champion)
4. Renzo Olivo (second round, retired)
5. Facundo Mena (first round)
6. Rio Noguchi (first round)
7. Juan Pablo Ficovich (first round)
8. Nick Hardt (first round)

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
		Jan Choinski	3	3
		Dominik Koepfer	6	6
									Dominik Koepfer	66	5
								3	Tomás Barrios Vera	78	7
	3	Tomás Barrios Vera	6	6
	Q	Patrick Kypson	4	3

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	J Duckworth	64	6	3
		TA Tirante	77	4	6				TA Tirante	6	6
		A Dougaz	2	2					F Comesaña	2	3
		F Comesaña	6	6												TA Tirante	4	4
		JL Reis da Silva	6	3	6											J Choinski	6	6
		A Walton	1	6	4				JL Reis da Silva	5	5
		J Choinski	4	7	6				J Choinski	7	7
	5	F Mena	6	5	2																		J Choinski	3	3
	4	R Olivo	7	6																			D Koepfer	6	6
	Q	R Statham	5	3				4	R Olivo	4	1r
		J Jung	0	63					M Neuchrist	6	4
		M Neuchrist	6	77												M Neuchrist	6	1	4
		RA Burruchaga	1	3												D Koepfer	4	6	6
		D Koepfer	6	6					D Koepfer	6	6
	Q	D Yevseyev	7	77				Q	D Yevseyev	3	2
	8	N Hardt	5	61

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	7	JP Ficovich	64	3
	Q	G Mpetshi Perricard	77	6				Q	G Mpetshi Perricard	77	6
		N Mejía	4	65					M Dellien	64	3
		M Dellien	6	77											Q	G Mpetshi Perricard	4	6	4
		Elmar Ejupovic	6	6											3	T Barrios Vera	6	4	6
	WC	L Pouille	3	3					E Ejupovic	6	0	64
	Q	N Chappell	65	1				3	T Barrios Vera	3	6	77
	3	T Barrios Vera	77	6																		3	T Barrios Vera	6	6
	6	R Noguchi	2	65																		Q	P Kypson	4	3
	WC	R Pacheco Méndez	6	77				WC	R Pacheco Méndez	3	3
		AD Vallejo	1	3				Q	P Kypson	6	6
	Q	P Kypson	6	6											Q	P Kypson	6	65	6
	Q	B Lock	6	3	5											T Atmane	2	77	2
		T Atmane	2	6	7				T Atmane	7	4	6
	LL	A Galarneau	6	6				LL	A Galarneau	5	6	4
	2	A Bellier	2	4