Jeff Hennessy

Jefferson T. Hennessy, Sr. (October 27, 1929 – March 24, 2015) was the United States trampolining team coach from 1964 to 1980. During this period, he coached more trampoline and double mini-tramp world and national champions than any other person in the United States. In total, his athletes were awarded 26 world championship medals and numerous national and regional titles and medals.

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