The Australian Rugby League commission is expected to sign off on a decision to allow teams to use an 18th man on Tuesday.

But the planned roll out of the new ruling is set to come with strings attached in an attempt to stop coaches rorting the system.
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Speaking on NRL360 on Fox League, The Daily Telegraphs Phil Buzz Rothfield revealed that the commission would meet and sign it off.
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However, the introduction of the 18th man would come with some conditions in an attempt to stop coaches using their extra sub in a bid to gain an advantage.
It is going to happen, Rothfield said. My mail is that tomorrow at the independent commission meeting they will sign off on an 18th man.
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But therell be strict conditions about using this extra player.
The first one is you have to have three players fail a HIA – like Cronulla did the other night at Parramatta – before you can use your 18th player.
This will stop coaches using it tactically.
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With the 18th player they are even thinking of making it a development or emerging player so that will stop coaches putting experienced 26-year-olds middle forwards on as 18th man to use them late in the game.
They are concerned that no coach would with two HIAs would [rort] a third.
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But Rothfields Telegraph colleague Paul Kent still argued that coaches would try to gain an upper hand.
Theres no doubt coaches will look to rort it, Kent said.
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If you have two HIAs which can be fairly common theres a chance they will rort the third to get him off.
Im a fan of it should only be used for HIAs, not for ACLs or any other injury.
Only for HIAs. And they should also look at this mandatory swandown period, so if you come off to do the rort to get another guy on, you stand them down for seven to eleven days so that they miss next week.
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I am comfortable with three [HIAs before an 18th man can be used]. The game started and if you lost a player, you had to play with 12.
Then everyone said this is not fair, so theyll bring on a replacement when youve got an injured player.
So theyd start faking injuries thats what will happen.
Weve had unlimited interchange, to some having to play half a game of reserve grade all these different scenarios.
And the whole thing that is consistent is that coaches cant be trusted theyre looking for a competitive advantage.