Australia rugby team captain Stephen Moore says the Test against Ireland tomorrow will be their toughest challenge this November.
The Wallabies are aiming for a Grand Slam to cap off a difficult season and have already secured wins over Wales, Scotland and France.
They face Ireland in Dublin before ending their tour against England the week after.
He says they always knew these games would be the biggest of the tour.
Moore says even though Ireland lost to the All Blacks last weekend their consistency was there and they will have to play their best game so far.
The Wallabies will face Ireland at 6.30am tomorrow.
In other matches tomorrow, Fiji will play Japan at 3.10am, Wales will take on South Africa at 6.30am, England will play Argentina at 3.30am while the All Blacks will face France at 9am.
