Oliver Campbell defeated the two-time defending champion Henry Slocum in the challenge round, 6–2, 4–6, 6–3, 6–1 to win the men's singles tennis title at the 1890 U.S. National Championships. It was the first of three U.S. Championships titles for Campbell.
Draw
Challenge round
Finals
Earlier rounds
Section 1
Section 2
Section 3
Section 4
References
Sources