PK
The basics
Quick facts
Intro
American tennis player
A.K.A.
William Percy Knapp
Gender:
Male
Places:
Work field:
Birth:
8 July 1863(South Norwalk, Norwalk, Fairfield County, Connecticut)
Death:
29 August 1917(New York City, New York, U.S.A.)
Star sign:
The details
Biography
Introduction
William Percy Knapp (July 8, 1863 – August 29, 1917) was an American tennis player active in the late 19th century.
Knapp reached the All-Comers final of the U.S. National Championships in 1885 and 1890 and the semifinals in 1884 and 1889.
Grand Slam singles finals
All-Comers Finals (2)
| Year | Championship | Opponent in Final | Score in Final |
| 1885 | U.S. Championships |  Godfrey Brinley | 3–6, 3–6, 6–3, 4–6 |
| 1890 | U.S. Championships | Oliver Campbell | 6–8, 6–0, 2–6, 3–6 |