Experienced Australia back row forward David Pocock paid tribute to Ireland following Saturday night’s nail-biting 27-24 win at the Aviva stadium.
Ireland completed a season clean-sweep of big Southern Hemisphere scalps, South Africa, New Zealand and Australia, for the first time ever.
And they did so in Dublin despite the loss of a string of experienced players due to injury, with the likes of Joe Carbery and Kieran Marmion playing out of position on a historic night for Irish rugby.
“Incredibly disappointed, but credit to Ireland, credit to Rory (Best) and the team - they played incredibly well, held on to the ball and created pressure,” said Pocock, who is best known as a Number 7, but wore the eight jersey against Joe Schmidt’s side.
“The start in particular was good from both teams, we felt we could have taken advantage of a few situations - we didn’t and at this level that’s often the difference.
“We dug pretty deep at times being down to 14 men and it wasn’t good enough. Well done to Rory, it was an incredible achievement and a great victory for Ireland.
“Three on tour and then the loss, so we're very disappointed. We prepared well this week and then we were beaten by a better side," said Pocock, speaking to RTÉ Radio 1's Saturday Sport.
“You can always look at it and take positives, but right now we’re very disappointed. We’ve had 14 or 15 debutants this year, so we’re building experience, but we’re playing to win.”
Australia were going looking for a Northern Hemisphere Grand Slam with wins over the old five nations teams, having already defeated Scotland, Wales and France in recent weeks.
Having fallen short against Ireland, they will face the final test of their tour against England at Twickenham next weekend.