Jack Sieg
Jack Sieg was an American swimmer who developed the Butterfly stroke in 1935.[1] He competed for the University of Iowa and first used the stroke in a breaststroke leg of a medley relay.[2]
Jack Sieg was an American swimmer who developed the Butterfly stroke in 1935.[1] He competed for the University of Iowa and first used the stroke in a breaststroke leg of a medley relay.[2]