Following controversies in 1905 over the increase of violence and professionalism in college football, a number of rule changes were implemented in 1906.
Both the Princeton Tigers and the Yale Bulldogs finished with undefeated seasons and played each other to a 0–0 tie on November 17, 1906.
[4] Only two players from "western" schools were first-team selections—quarterback Walter Eckersall from the University of Chicago and center William Thomas Dunn from Penn State.
The Washington Post in December 1906 wrote of the difficulty involved in selecting eleven players for an All-American team:"A big problem confronts the person who this year undertakes to select eleven men for a football team which he wishes to call the best in the country.
No man whose amateur status is a matter of question or whose play has been unsportsmanly is eligible to this national team, which, in keeping with its honorary nature, I endeavor to confine to sportsmen.