2023 U.S. Men's Clay Court Championships – Singles

Frances Tiafoe defeated Tomás Martín Etcheverry in the final, 7–6(7–1), 7–6(8–6) to win the singles tennis title at the 2023 U.S. Men's Clay Court Championships. It was Tiafoe's first ATP Tour title in five years.

Reilly Opelka was the reigning champion, but could not defend his title due to injury.

Rain disrupted play midway through the tournament, causing several second round matches and all quarterfinals to be moved to Saturday, with the semifinals and final played on Sunday.

Seeds
The top four seeds received a bye into the second round. • #🇺🇸 Frances Tiafoe (champion)

• #🇺🇸 Tommy Paul (second round)

• #🇺🇸 Brandon Nakashima (withdrew)

• #🇺🇸 John Isner (second round)

• #🇺🇸 J. J. Wolf (quarterfinals)

• #🇦🇺 Jason Kubler (quarterfinals)

• #🇺🇸 Marcos Giron (second round)

• #🇦🇷 Tomás Martín Etcheverry (final)

Seeds
• # 🇯🇵 Yosuke Watanuki (qualified)

• # 🇦🇺 Rinky Hijikata (first round)

• # 🇩🇪 Yannick Hanfmann (qualified)

• # 🇧🇪 Zizou Bergs (qualifying competition, lucky loser)

• # 🇨🇿 Tomáš Macháč (qualified)

• # Alejandro Tabilo (first round)

• # 🇦🇷 Facundo Díaz Acosta (qualifying competition)

• # 🇧🇷 Felipe Meligeni Alves (qualifying competition)

Qualifiers
• # 🇯🇵 Yosuke Watanuki

• # 🇨🇿 Tomáš Macháč

• # 🇩🇪 Yannick Hanfmann

• # 🇦🇺 Aleksandar Vukic

Lucky loser
• # 🇧🇪 Zizou Bergs