The Parramatta No.7 was due to head to sin city for his best mate's buck's weekend but opted out after a phone call from Mal Meninga.

Having swapped the blue and gold for the green and gold, he again starred on Bankwest Stadium.

The Dally M halfback of the year scored three tries to help the Kangaroos take out the inaugural World Cup Nines 24-10 against New Zealand. Afterwards, he was named player of the tournament.

It has been a remarkable turnaround given the former Tiger was shopped to rival clubs just 12 months ago.

Realising he had needed to turn things around, he skipped plans to watch UFC star Connor McGregor in Las Vegas and began his own fight to fulfil his potential.

The 25-year-old has since capped a stunning season in style in one of the most entertaining matches of the tournament.

After scoring two solo tries, Moses finished off a long David Fifita break between the posts to seal the result.

"It was a great experience, I love playing here," Moses said.

"Our boys were outstanding, I'm just happy to get the win.

"I just wanted to take in as much as possible playing with some world-class players, to learn from their leadership and work ethic.

"I really enjoyed the week and we really turned it on."

Not for the first time this month, a grand final ended in controversy.

With his side up by just three points at half-time, Kyle Feldt was awarded what turned out to be a crucial try.

Replays suggested the winger may have grounded the ball short of the line or come up with a double movement. The referees pointed to the spot and that was that.

The first international nines World Cup will be remembered for many reasons.

Despite two spectacular spring days, the crowds were disappointing, with just 15,684 turning up on Saturday.

Also disappointing was the performance of Tonga, who didn't make the finals despite boasting a team that included Jason Taumololo, Andrew Fifita and Tevita Pangai jnr.

Ditto Fiji, a team renowned for its form in the abridged versions of the game. Perhaps next time they might try to actually try to get the ball to unstoppable winger Maika Sivo.

However, the tournament belonged to the Australians, who got through the group stages undefeated despite briefly trailing the United States earlier in the day.

"Rugby league is the winner," captain Wade Graham said as he collected the winner's trophy on behalf of his team.