Goalkeeper is the only position to be explicitly part of the rules of the game since they were codified in the 19th century.
The United States is a member of CONCACAF, the Confederation of North, Central American and Caribbean Association Football.
On a regulation size field, the edge of the penalty box is 18 yards from the goal line.
The first soccer game based on English FA rules in the United States took place between Rutgers University and Princeton University on Novermber 6, 1869.
D.C. United has won the MLS Cup four times, more than any other team.