Harold Throckmorton
Harold Avington Throckmorton was an American tennis player in the early 20th century.
Biography
He was born on April 12, 1897 in Hackensack, New Jersey.He played intercollegiate tennis for Princeton. He was champion of the state of New Jersey. In 1917 he won the men's doubles titles at the U.S. National Championships with Fred Alexander.
In 1918 he served in the artillery in the United States Army. After the war he became a businessman. He died in 1973. He left $2,500 for the care of his Irish terrier.
Grand Slam finals
Doubles (1 title)
| Result | Year | Championship | Surface | Partner | Opponents | Score |
| Win | 1917 | US Championships | Grass |  Fred Alexander | Harry Johnson Irving Wright | 11–9, 6–4, 6–4 |