1990 Volvo U.S. National Indoor – Singles

Brad Gilbert was the defending champion, but did not take part in the U.S. National Indoor tennis tournament that year.Michael Stich clinched his first career singles title in the final, defeating Wally Masur 6–7(5–7), 6–4, 7–6(7–1).

1990 Volvo U.S. National Indoor – Singles

Brad Gilbert was the defending champion, but did not take part in the U.S. National Indoor tennis tournament that year.Michael Stich clinched his first career singles title in the final, defeating Wally Masur 6–7(5–7), 6–4, 7–6(7–1).