2019 JSM Challenger of Champaign–Urbana – Singles

Reilly Opelka was the defending champion but chose not to defend his title.

J. J. Wolf won the title after defeating Sebastian Korda 6–4, 6–7(3–7), 7–6(8–6) in the final.

Seeds
All seeds receive a bye into the second round. • # 🇺🇸 Denis Kudla (second round)

• # Blaž Rola (second round)

• # 🇪🇨 Emilio Gómez (third round)

• # Mikael Torpegaard (third round)

• # 🇨🇦 Peter Polansky (second round)

• # 🇺🇸 Christopher Eubanks (third round)

• # 🇦🇷 Francisco Cerúndolo (second round)

• # 🇦🇷 Juan Pablo Ficovich (quarterfinals)

• # 🇺🇸 J. J. Wolf (champion)

• # 🇩🇴 Roberto Cid Subervi (third round)

• # 🇯🇵 Kaichi Uchida (second round)

• # 🇨🇦 Filip Peliwo (second round)

• # 🇺🇸 JC Aragone (third round)

• # 🇺🇸 Sebastian Korda (final)

• # 🇺🇸 Kevin King (second round)

• # 🇺🇸 Roy Smith (second round)