2020 Columbus Challenger – Singles

Peter Polansky was the defending champion but lost in the second round to Strong Kirchheimer.

J. J. Wolf won the title after defeating Denis Istomin 6–4, 6–2 in the final.

Seeds
All seeds receive a bye into the second round. • # 🇦🇺 Christopher O'Connell (third round)

• # 🇦🇺 Marc Polmans (quarterfinals)

• # 🇩🇪 Cedrik-Marcel Stebe (quarterfinals)

• # 🇪🇨 Emilio Gómez (third round)

• # 🇺🇿 Denis Istomin (final)

• # 🇺🇸 J. J. Wolf (champion)

• # 🇮🇱 Dudi Sela (second round, retired)

• # Mikael Torpegaard (semifinals)

• # 🇮🇳 Ramkumar Ramanathan (second round)

• # 🇨🇦 Peter Polansky (second round)

• # 🇦🇺 Andrew Harris (second round)

• # 🇦🇺 Jason Kubler (second round)

• # 🇦🇹 Jurij Rodionov (semifinals)

• # 🇦🇷 Juan Pablo Ficovich (second round)

• # 🇰🇷 Nam Ji-sung (third round)

• # 🇦🇺 Aleksandar Vukic (quarterfinals)