"Gene Tunney called Gibbons 'the perfect boxer.' Gene said he learned more about the technique of boxing and punching from watching Mike training in New York gymnasiums and in actual fights in Gotham than he learned from any other individual associated with the fistic sport. Moreover, Tunney has told me it was Gibbons' clean-cut victory over Jack Dillon, the mighty light heavyweight from Indianapolis, that inspired in him the belief he could whip Jack Dempsey."

Source: George Ade (2016). “Fables in Slang”, p.25, Youcanprint