New Zealand have yet to hit top form at the World Cup, according to utility back Sonny Bill Williams.
The All Blacks cruised through their pool, including an impressive demolition of France, before subduing Argentina in the last eight.
"We haven't played our best footy yet," said Williams, who is fighting for a starting spot in Sunday's semi-final with Australia.
"We all want to be there and we all know the magnitude of the event."
Williams has played a prominent role in the All Blacks' campaign to date, starting two pool matches at centre, coming off the bench onto the wing in the other two, before starting the quarter-final on the wing.
"I've surprised myself how well I've played on the wing," said the 26-year-old, who was a second-rower in his rugby league days, which included five years in Australia with the Canterbury Bulldogs and an NRL grand final triumph in 2004 as an 18-year-old.
"Some people didn't think I could play rugby [union], I showed them that I can. I'm always a confident player and if I'm put out there [on the wing] I'll do the job as best I can, just do the little things and it all comes good.
"I'm doing all the little things right, I'm ticking all the boxes during the week and staying in the now, not looking back at the past or what's happened."
Williams, who won seven caps for New Zealand in rugby league before switching codes, admits the World Cup was the reason he left the Bulldogs for French Top 14 club Toulon in 2008, before returning to New Zealand last year.
"There is nothing better than this stage," he added. "It's pretty much the whole reason why I came back here, to test myself against the best players, to try and make this team, this squad."
With Ma'a Nonu and Conrad Smith the proven centre combination, Williams is battling with fit-again Richard Kahui and Cory Jane for one of the wing spots.
With Mils Muliaina ruled out of the rest of the tournament by injury, Israel Dagg is likely to reclaim the number 15 shirt after missing the win over Argentina.
