New Zealand Rugby star Dan Carter has admitted that Reds captain and scrum half Will Genia is a worry for the All Blacks ahead of their Rugby Championship opener.
Carter has played against Genia for the Crusaders and the All Blacks when Genia has split defences and produced memorable tries.
Genia will be playing without Quade Cooper who is renowned for his playmaking skills but Cooper's absence means that Genia will be under added pressure to find holes in the All Black defence.
"He sparks a lot of their attack and he's shown on many occasions what he's capable of," Carter told Sportal.
"He's a real attacking weapon for the Wallabies so we've worked hard, especially with our forwards around the breakdown to make sure you're always sound in those areas to stop his running game because if he gets that going it can be a tough night at the office.
"Every time we've had success against the Wallabies we've managed to nullify their strengths and I guess Will's running game is definitely one of them."
The Wallabies are desperate to end their Bledisloe Cup pain by winning back the trophy which they lost nearly 10 years ago and have had an extra week in training as Australian teams were knocked out of Super Rugby earlier.
"They've been working together for the last three weeks now and we've only been together for just over a week so they've been training pretty hard together and building a lot of combinations and working towards this one game so they're going to be really hungry," he said.
"They're already talking a lot about the Bledisloe Cup which they haven't had for a long time and they will be confident they can beat us over there in Sydney.
"We're going to have to start well to stop them and put some doubt in their minds."
"Their backline is extremely dangerous with the likes of Digby Ioane, Kurtley Beale they can really open up teams given time and space so we really have to shut down a couple of those guys," he said.
Carter said that the All Black forwards will be under pressure to deliver good possession as their mid-field can pose serious threats for the Wallabies if they can get the ball.
"We've got some real attacking weapons in the backline, in particular, Sonny Bill (Williams) and Ma'a (Nonu) who are dangerous with the ball in hand so from my perspective I'll just be looking to give them as many opportunities as possible and look to feed off them because they are quality players and massive men who can give us good go-forward," he said.
"It's pretty awesome looking outside and seeing those two, they're huge," he said.