2019 Columbus Challenger – Singles

Michael Mmoh was the defending champion but chose not to defend his title.

J. J. Wolf won the title after defeating Mikael Torpegaard 6–7(4–7), 6–3, 6–4 in the final.

Seeds
All seeds receive a bye into the second round. • # Thiemo de Bakker (second round)

• # 🇨🇦 Filip Peliwo (third round)

• # 🇸🇰 Norbert Gombos (third round)

• # 🇧🇾 Uladzimir Ignatik (quarterfinals)

• # 🇨🇴 Santiago Giraldo (third round)

• # 🇺🇸 Dennis Novikov (second round)

• # 🇫🇷 Benjamin Bonzi (second round)

• # 🇺🇸 Kevin King (second round)

• # Gastão Elias (third round)

• # Nino Serdarušić (second round)

• # 🇫🇷 Mathias Bourgue (second round)

• # 🇪🇸 Bernabé Zapata Miralles (semifinals)

• # 🇩🇴 José Hernández-Fernández (second round)

• # 🇫🇷 Johan Tatlot (second round)

• # 🇮🇹 Gianluca Mager (second round)

• # 🇪🇸 Mario Vilella Martínez (third round)