2019 Fairfield Challenger – Singles

Bjorn Fratangelo was the defending champion but chose not to defend his title.

Christopher O'Connell won the title after defeating Steve Johnson 6–4, 6–4 in the final.

Seeds
All seeds receive a bye into the second round. • # 🇺🇸 Steve Johnson (final)

• # 🇺🇸 Denis Kudla (third round)

• # 🇺🇸 Marcos Giron (withdrew)

• # 🇯🇵 Taro Daniel (quarterfinals)

• # Blaž Rola (third round)

• # 🇦🇺 James Duckworth (third round)

• # 🇪🇨 Emilio Gómez (third round)

• # 🇨🇦 Peter Polansky (quarterfinals)

• # Darian King (quarterfinals)

• # 🇪🇸 Nicola Kuhn (third round)

• # 🇺🇸 Thai-Son Kwiatkowski (withdrew)

• # 🇦🇺 Christopher O'Connell (champion)

• # 🇺🇸 Mitchell Krueger (second round)

• # 🇺🇸 Jack Sock (second round)

• # 🇺🇸 Ernesto Escobedo (second round)

• # 🇺🇸 Maxime Cressy (third round)

• # 🇺🇸 Donald Young (third round)