2018 Morelos Open – Singles

Alexander Bublik was the defending champion but chose not to defend his title.

Dennis Novikov won the title after defeating Cristian Garín 6–4, 6–3 in the final.

Seeds
• # 🇸🇰 Andrej Martin (quarterfinals)

• # 🇺🇸 Kevin King (quarterfinals)

• # 🇺🇸 Dennis Novikov (champion)

• # 🇺🇸 Evan King (second round)

• # Marcelo Arévalo (first round)

• # 🇦🇺 Thanasi Kokkinakis (semifinals, withdrew)

• # 🇷🇸 Peđa Krstin (semifinals)

• # 🇰🇿 Dmitry Popko (quarterfinals)