2023 León Open

Country	Player	Rank1	Seed
AUS	James Duckworth	110	1
ARG	Facundo Bagnis	113	2
SUI	Antoine Bellier	170	3
ARG	Renzo Olivo	190	4
FRA	Antoine Escoffier	197	5
ARG	Thiago Agustín Tirante	199	6
AUT	Maximilian Neuchrist	206	7
ARG	Juan Pablo Ficovich	223	8

• ¹ Rankings are as of April 3, 2023.^[2]

The following players received wildcards into the singles main draw:

• Facundo Bagnis
• Rodrigo Pacheco Méndez
• Alan Fernando Rubio Fierros

The following players received entry into the singles main draw as alternates:

• Vitaliy Sachko
• Denis Yevseyev

The following players received entry from the qualifying draw:

• Nick Chappell
• Jason Jung
• Christian Langmo
• Benjamin Lock
• Giovanni Mpetshi Perricard
• Adam Walton

• Giovanni Mpetshi Perricard def. Juan Pablo Ficovich 6–7^(5–7), 7–6^(8–6), 7–6^(7–3).

• Aziz Dougaz / Antoine Escoffier def. Maximilian Neuchrist / Michail Pervolarakis 7–6^(7–5), 3–6, [10–5].