1990 U.S. Men's Clay Court Championships – Singles

Jay Berger was the defending champion, but did not participate this year. David Wheaton won the title, defeating Mark Kaplan 6–4, 6–3 in the final.

1990 U.S. Men's Clay Court Championships – Singles

Jay Berger was the defending champion, but did not participate this year. David Wheaton won the title, defeating Mark Kaplan 6–4, 6–3 in the final.