The existing rule,which also exists in the AFL and requires teams to break into six pairs of players in each zone for centre bounces,will remain.Credit:Glenn Hunt
Players on the mark at kick-ins will also have to move five metres further back – giving the player kicking in more time and space to play on.
The AFL's head of football Steve Hocking said the changes were required to achieve"a better balance between attack and defence while encouraging more open ball movement"as the downward trend in scoring continued throughout this century.
Hocking would not commit to how much he expected the changes to impact scoring although he acknowledged it was clearly the intent of the changes and said player welfare was front of mind when the AFL decided to reduce the interchange numbers by just 17 per cent.
"What we have aimed to do is create more time and space in the game. A lot of defensive layers have crept in over time,"Hocking said.
He said the competition committee did not consider reducing the number of players on the ground from 18 to 16 as the number was enshrined in the game's charter. The committee also ruled out introducing a last-touch rule as teams would only set up defensively to counteract its influence.
The radical trial of more zones in the second-tier competition will require a minimum of three pairs of players to be in each of the two 50-metre arcs at boundary throw-ins and kick-ins.