Rules of the Game: The referee alone is authorized to allow an injured player to re-enter the field, whether the ball is in play or not.
Rules of the Game: During penalty kicks to determine the winner of a match, all players, except the player taking the kick and the two goalkeepers, must remain within the center circle.
Rules of the Game: A goal cannot be scored directly from a throw-in.
Rules of the Game: A free kick awarded to the defending team inside its own goal area can be taken from any point within the goal area.
The U.S. Women's National Team's top two career goal scorers, Mia Hamm and Kristine Lilly, were teammates at the University of North Carolina.