Rules of the Game: The ball is in play at all other times, including when it rebounds from a goalpost, crossbar or corner flag post and remains in the field of play.
The first appearance of organized women's soccer in the US may have been in 1922, when a team sponsored by English company Dick, Kerr toured the country -and beat several top men's teams.
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.
Substitutions were allowed for the first time in the 1970 World Cup.
London's new Wembley Stadium, which opened in 2007, has a seating capacity of 90,000.