Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Joseph Devlin (born February 23, 1954 in Phoenixville, Pennsylvania) was an American football offensive tackle in the National Football League for the Buffalo Bills. Devlin played college football at the University of Iowa and he is a cousin of former center Mike Devlin. Devlin is a graduate of Great Valley High School and is the only professional football player to graduate from the school. American football is a sport played between two teams of eleven with the objective of scoring points by advancing the ball into the opposing team's end zone. Known in the United States simply as football, it may also be referred to informally as gridiron football.