2019 Tiburon Challenger – Singles

Michael Mmoh was the defending champion but lost in the second round to Brandon Nakashima.

Tommy Paul won the title after defeating Thanasi Kokkinakis 7–5, 6–7(3–7), 6–4 in the final.

Seeds
All seeds receive a bye into the second round. • # 🇺🇸 Tommy Paul (champion)

• # 🇺🇸 Denis Kudla (second round)

• # 🇺🇸 Marcos Giron (third round)

• # 🇪🇨 Emilio Gómez (semifinals)

• # Mikael Torpegaard (third round)

• # 🇺🇸 Michael Mmoh (second round)

• # Darian King (third round)

• # 🇦🇺 Thanasi Kokkinakis (final)

• # 🇫🇷 Enzo Couacaud (third round)

• # 🇺🇸 Christopher Eubanks (third round)

• # 🇺🇸 Mitchell Krueger (second round)

• # 🇨🇦 Peter Polansky (second round)

• # 🇨🇴 Daniel Elahi Galán (second round)

• # 🇺🇸 Thai-Son Kwiatkowski (semifinals)

• # 🇺🇸 Ernesto Escobedo (third round)

• # 🇺🇸 Maxime Cressy (quarterfinals)