|Full name||Robert Duffield Wrenn|
|Country (sports)||United States|
|Born||September 20, 1873
Highland Park, IL, United States
|Died||November 21, 1925
New York, NY, United States
|Plays||Left-handed (1-handed backhand)|
|Int. Tennis HoF||1955 (member page)|
|Highest ranking||No. 1 (1897, Karoly Mazak)|
|Grand Slam Singles results|
|US Open||W (1893, 1894, 1896, 1897)|
|Grand Slam Doubles results|
|US Open||W (1895)|
Robert "Bob" Duffield Wrenn (September 20, 1873 – November 21, 1925) was a former co-World No. 1 left-handed American tennis player, four-time U.S. singles championship winner, and one of the first inductees in the International Tennis Hall of Fame.
Wrenn was born in Highland Park, Illinois. Wrenn attended Harvard University where he was a prominent quarterback on the football team. He won his tennis titles in 1893, 1894, 1896 and 1897 (losing out to Fred Hovey in 1895). In 1898, he was serving in Cuba with Theodore Roosevelt's Rough Riders in the Spanish–American War. He contracted yellow fever while in Cuba.
Wrenn played for the U.S. Davis Cup team in 1903 together with his brother George. In the final against the British Isles at the Longwood Cricket Club, Boston, MA they were defeated 1–4 and Wrenn lost both his singles matches against Reginald and Lawrence Doherty as well as the doubles against the Doherty brothers.
He was arrested in 1914 when the car he was driving ran over and killed Herbert George Loveday, the choir director of St Mary's Church, in Tuxedo Park, New York. Wrenn was exonerated when, according to The New York Times (May 21, 1914), "The Grand Jury, finding from testimony that the mechanism of the car had become disarranged, and the steering gear powerless, declined to find an indictment, and the complaint was dismissed."
Grand Slam finals
Singles (4 titles, 1 runner-up)
|Winner||1893||U.S. Championships||Grass||Fred Hovey||6–4, 3–6, 6–4, 6–4|
|Winner||1894||U.S. Championships||Grass||Manliff Goodbody||6–8, 6–1, 6–4, 6–4|
|Runner-up||1895||U.S. Championships||Grass||Fred Hovey||3–6, 2–6, 4–6|
|Winner||1896||U.S. Championships||Grass||Fred Hovey||7–5, 3–6, 6–0, 1–6, 6–1|
|Winner||1897||U.S. Championships||Grass||Wilberforce Eaves||4–6, 8–6, 6–3, 2–6, 6–2|
Doubles (1 title, 1 runner-up)
|Winner||1895||U.S. Championships||Grass||Malcolm Chace|| Clarence Hobart
|7–5, 6–1, 8–6|
|Runner-up||1896||U.S. Championships||Grass||Malcolm Chace|| Carr Neel
|3–6, 6–1, 1–6, 6–3, 1–6|
- Mazak, Karoly (2010). The Concise History of Tennis, p. 25.
- "Davis Cup - Profile Robert Wrenn". ITF. Retrieved April 19, 2012.
- "Exonerates R.D. Wrenn". The New York Times. May 21, 1914. Retrieved April 19, 2012.
- USTA (1979). Bill Shannon, ed. Official Encyclopedia of Tennis (Rev. and updated 1st ed.). New York: Harper & Row. p. 379. ISBN 0060144785.