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 a penalty kick, the players other than the kicker must be inside the field of play but outside the penalty area and at least 9.15 m (10 yds) from the penalty mark.
Rules of the Game: For international matches the field of play must have dimensions of: Length: minimum 100 m (110 yds), maximum 110 m (120 yds); Width: minimum 64 m (70 yds), maximum 75 m (80 yds).
Liverpool came back from a 3-0 halftime deficit to beat AC Milan in penalties in the 2005 Champions League final.
American Bert Patenaude scored the first hat trick in World Cup history in a 3-0 victory over Paraguay in 1930.