Jack Sieg

Jack George Sieg (December 10, 1914 – December 21, 1968) was an American swimmer who used the butterfly stroke in 1935,^[1] developed by his coach Dave Armbruster.^[2] He competed for the University of Iowa^[3] and first used the stroke in a breaststroke leg of a medley relay February 25, 1935.^[4]

Jack Sieg

Personal information
Born	(1914-12-10)December 10, 1914 Kansas City, Missouri, United States
Died	December 21, 1968(1968-12-21) (aged 54) Oklahoma, United States
Sport
Sport	Swimming
Club	University of Iowa

See also

• History of swimming