2018 Torneo Internacional Challenger León – Singles

Adrián Menéndez Maceiras was the defending champion but lost in the second round to John-Patrick Smith.

Christopher Eubanks won the title after defeating Smith 6–4, 3–6, 7–6(7–4) in the final.

Seeds
• # 🇪🇸 Adrián Menéndez Maceiras (second round)

• # 🇩🇪 Mats Moraing (first round, retired)

• # 🇺🇸 Dennis Novikov (second round)

• # 🇩🇴 Víctor Estrella Burgos (first round)

• # 🇺🇸 Kevin King (first round)

• # Darian King (second round)

• # 🇨🇦 Filip Peliwo (quarterfinals)

• # Marcelo Arévalo (first round)