until the end of that period, the ball is "in play" at all times until the end of the playing period, except when the ball leaves the field of play or play is stopped by one of the umpires; in these cases play is restarted by one of the following five methods: Kick-off: following a base, or to begin each period of play. Throw-in: when the ball has wholly crossed the touchline; awarded to opposing team to that which last touched the ball. Ball may be thrown with one hand (and usually is, due to its weight). The receiving players usually 'head' or 'shoulder' it on from the throw. Base kick: when the ball has wholly crossed the base line without a base having been scored and having last been touched by an attacker; awarded to defending team. Taken from the baseline. Corner throw: when the ball has wholly crossed the base line without a goal having been scored and having last been touched by a defender; awarded to attacking team. The ball is thrown in from the point where the ball crossed the baseline. There is a formation similar to that of a 'line-out' in rugby allowed, with any number of players allowed in the line, so long as the opposing team supplies an equal number of players. There are no requirements as to how far the ball needs to be thrown, but the players must stand three yards or more from the base line to receive the ball. Yards: when the ball has been caught by a player either from the foot of an opposing player or from the foot of a team player who is playing back into their own half; awarded to the team whose member caught the ball. The umpire places their Yardstick on the pitch at the point that Yards is called. The player who caught the ball may take any length of run up, but may only take three strides after the yardstick has been reached. After this, they may take a shot at goal or kick the ball up and back to another player on their team (known as a 'transfer'). Yards can be called by the second player, but no strides may be taken unless the original player took none. For these kicks, the opposing team must stand no closer than ten yards in front of the kicker and may only