Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. John Sutro (born John Robert Sutro) is a former player in the National Football League. He played with the San Francisco 49ers during the 1962 NFL season. 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.