Duration of Play.—Choice of Goals.—The Kick-off.
2. The duration of the game shall be ninety minutes, unless otherwise mutually agreed upon. The winners of the toss shall have the option of kick-off or choice of goals. The game shall be commenced by a place kick from the centre of the field of play in the direction of the opponents' goal line; the opponents shall not approach within ten yards of the ball until it is kicked off, nor shall any player on either side pass the centre of the ground in the direction of his opponents' goal until the ball is kicked off.
(If this law is not complied with the kick-off must be taken over again.)