1890 U.S. National Championships – Men's singles

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.

[1] It was the first of three U.S. Championships titles for Campbell.

Semifinal at the 1890 U.S. Tennis Championships at Newport. Match between Oliver Campbell and Bob Huntington