Physocarpus

Donald Paterson Turnbull (28 May 1909 – 30 January 1994) was a professional tennis player from Australia. He won the men's doubles title at the Australian Championships twice, in 1936 and 1937.^[2] Turnbull represented Australia in three Davis Cup ties, including the 1933 Europe Zone final against Great Britain.^[3] Turnbull beat defending champion Edgar Moon at the 1931 Australian Championships. Turnbull's forehand was in fine form and Moon made the mistake of not targeting Turnbull's weaker backhand. Turnbull came from 2–0 down in the fifth set to win.^[4] Turnbull lost in the semifinals to Jack Crawford in straight sets.

Result	Year	Championship	Surface	Partner	Opponents	Score
Loss	1934	Australian Championships	Grass	Adrian Quist	Pat Hughes Fred Perry	8–6, 3–6, 4–6, 6–3, 3–6
Loss	1935	French Championships	Clay	Vivian McGrath	Jack Crawford Adrian Quist	1–6, 4–6, 2–6
Win	1936	Australian Championships	Grass	Adrian Quist	Jack Crawford Vivian McGrath	6–8, 6–2, 6–1, 3–6, 6–2
Win	1937	Australian Championships	Grass	Adrian Quist	John Bromwich Jack Harper	6–2, 9–7, 1–6, 6–8, 6–4
Loss	1939	Australian Championships	Grass	Colin Long	John Bromwich Adrian Quist	4–6, 5–7, 2–6

Result	Year	Championship	Surface	Partner	Opponents	Score
Loss	1937	Australian Championships	Grass	Dorothy Stevenson	Harry Hopman Nell Hall Hopman	6–3, 3–6, 2–6

• Don Turnbull at the Association of Tennis Professionals