Gaming

The possession rule and the changes that accompanied it were associated with Walter Camp, a player for Yale in the late 1870s. A gifted strategist and promoter, Camp served as a coach or adviser to the Yale team from 1879 to 1910 and as the key figure on various rules committees. Through devices such as his All-America teams, he was also instrumental in making football a nationwide intercollegiate sport. Led by Camp, the handful of youthful rules-makers enacted the yards and downs rule (three downs to gain five yards), numerical scoring, interference in front of the ball carrier, and tackling between the waist and the knees (rather than above the waist). Players could move forward before the snap of the ball (momentum plays), and push and pull the ball carrier through the defense (mass play). As a result of these rules changes, football became noticeably rougher and by the late 1800s was criticized by clergy, newspaper editors, and some older college faculty and administrators for its dangers and brutality.