it can not injure other players. The game is played with an ellipsoid ball, on a grassed oval. Field Four posts, aligned in a straight line, apart from each other ( in total length), are erected at either end of the oval. The size of the ground is not fixed, but is generally between long and wide. The main field markings are: the boundary line, from the fence, and curved except for the goal lines a centre square two concentric circles in the centre with diameters and , bisected by one line, a goal square at each end of the ground, an arc at each end, from the goal line Play The game is a fast-paced combination of speed, athleticism, skill and physical toughness. Players are allowed to tackle the player with the ball and impede opposition players from tackling their teammates (known as shepherding), but not to deliberately strike an opponent (though pushing the margins of these rules is often a substantial part of the game). Like most team sports, tactics are based around trying to get the ball, then – through a combination of running with the ball, hand-passing (punching the ball from the open palm of the other hand) and kicking – to deliver it to a player who is within range of goal. Because taking a mark entitles the player to a free kick, a common tactic is to attempt to kick the ball on the full (without bouncing) to a teammate who is within kicking range of goal. In this situation, packs of players often form around the goal square, and the opportunity arises for spectacular marks in which players launch themselves off opponents' backs to mark the ball, high in the air. This particular skill is highly regarded as a spectacle, and an annual "Mark of the Year" is awarded at the end of a season. There are no set positions in the rules of the game, but traditionally the field was divided into three major sections: the forward line, back line, and midfield. The forward and back lines consisted of six players, arranged into two lines of three players each. The midfield generally consists of the designated ruckman (i.e. player who contests the ruck or bounce-down) and players who either stay in the centre area of the ground (between the two 50-metre arcs) or follow the ball and are not confined to a