Jack George Sieg (December 10, 1914 – December 21, 1968) was an American swimmer who used the butterfly stroke in 1935,Matthew Syed: Matthew Syed: Claim that Michael Phelps will be the greatest is diminished by IOC excesses, August 14, 2008 (The Times (London)). developed by his coach Dave Armbruster.Armbruster Enters 14 Men in Big Ten Tank Meet (p. 6/10), March 8, 1934. All Iowa Behind Them (p. 4/8); Eight Old Swimmers Embark Tomorrow for National Tank Meet (p. 6/8); Allen Likes Fielhouse Pool; Brings Bob Christians With Him to Enroll (p. 7/8), March 21, 1936. Iowa Mermen in Triangular Meet (p. 7/8), October 13, 1937 (The Daily Iowan). He competed for the University of IowaHow to Swim the Butterfly, Nov 14, 2006 (h2g2). and first used the stroke in a breaststroke leg of a medley relay February 25, 1935.Badgers beaten in Swim Meet , February 26, 1935: “for the first time in competition Monday” (The Milwaukee Journal).
See also History of swimming
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