| Singles | |
|---|---|
| 1886 U.S. National Championships | |
| Champion | Richard Sears |
| Runner-up | Robert Livingston Beeckman |
| Final score | 4–6, 6–1, 6–3, 6–4 |
Richard Sears won his 6th consecutive title by beating Robert Livingston Beeckman in the challenge round. For the first time, all matches were played best of 5 sets.