Cometh the hour, cometh the man.

And when it comes to rugby league, Origin deciders don't come much bigger.

Especially when it is celebrating its 25th anniversary.

But NSW coach Ricky Stuart is sweating on which player will stake his claim at Suncorp Stadium on Wednesday night - Blues halfback Andrew Johns or Maroons pivot Darren Lockyer.

Johns produced a sublime display to level the series in Origin II last month.

But Stuart said the scheming No.7 would have to be "more dominant" if the Blues are to become only the second NSW team to come back from 1-0 down and win an Origin series.

Stuart was more concerned about Lockyer, saying the Queensland skipper was due for a "big game".

"He's come out and said that personally he hasn't been too happy with his first two games," Stuart said at the Blues' final training session on Tuesday.

"When such a great player comes out and delivers that message I think you have to show concern as a coach.

"The great players have the ability to have such a high bearing on a result with the way he plays the game, when he mentions that he is keen to lift his performance it's obviously a case for us to show some urgency.

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