Rules of the Game: An indirect free kick is awarded to the opposing team if a goalkeeper touches the ball with his hands after he has received it directly from a throw-in taken by a teammate.
Mexico's most famous stadium, Estadio Azteca, has an official seating capacity of 114,465.
Landon Donovan is the only four-time winner of the Honda Player of the Year award, which is given by sports media to the best player on the US Men's National Team.
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.