You might ask what does the Chicago Athletic Association have to do with professional football. Sure Heffelfinger played with them prior to playing with the Allegheny Athletic Association but that's it, right? Not quite. The football club at Chicago was established in 1892 with the intention of being competitive from day one, which it was. Heffelfinger's presence on the team was key & this allowed them to sign up games with the Big Three [Harvard, Yale, & Princeton] instantly. Heffelfinger was considered the greatest lineman of his day. In the past, players traded their services in exchange for expense money, double expenses, or trophies/trinkets that they would pawn back to the team. The Amateur Athletic Union which governed the sport, questioned these tactics but the players were always one step ahead. William Randall Crawford [Billy Crawford], captain of the team, was able to find loopholes in the rules of the AAU. This paved the way for Crawfor...