Among the prominent alumni to play in a 19th century version of rugby (rules that did not allow forward passes or center snaps) was John Heisman, namesake of the Heisman Trophy and an 1892 graduate of the University of Pennsylvania Law School. Heisman was instrumental in the first decade of the 20th century in changing the rules to more closely relate to present rules of American football. One of the captains of Heisman's teams was Harry Arista Mackey, Penn Law Class of 1893 (who subsequently served as Mayor of Philadelphia from 1928 to 1932.)