Wallabies skipper James Horwill believes his side will make the most of a career highlight by beating the British and Irish Lions.
The first of three Tests takes place in Brisbane on Saturday and Horwill emphasised the the importance of claiming a series win the over the tourists who last visited Australia in 2001.
"I think we're going to win, I don't know what the bookies say but I believe we'll win," the 28-year-old said.
"It's right up there, a once-in-a-career opportunity and we're certainly aware of how big it is.
"A World Cup is the pinnacle of the game because you're coming up against the best, but this would have to be a close second.
"The build-up of the traditional tour where you are playing games against provinces is something that is unique to the Lions these days."
Horwill is relishing the opportunity of going head to head with Ireland second row Paul O'Connell, a veteran of two previous Lions tours.
"Paul's a big part of their team, a guy they turn to," he said.
"He's experienced and has played on Lions tours before.
"We're certainly aware of his capabilities. He's had some time off due to injury but has come back rejuvenated and has been playing some great rugby.
"We're very wary of his capabilities around the ground and at the line-out. He's been very influential at the breakdown in a number of games in this tour."