"The Vipers are more like us, who I would call heartland sides - obviously Auckland and Counties are the big city teams who are way out in front - but in saying that, every game at this level is a challenge."
The Swords teams will be practising hard this week, knowing that this weekend's fixtures in Palmerston North could be the best chance for the premiers and the U15s - the U17s won their opening encounter against Waicoa Bay last week - to win their first match in this year's competition.
"I just want us to be competitive at the moment," Rau said. "Winning is a word that's still way up there, we've still got a lot of things to achieve in the way we play if we want to get there."
The teams will also have to cope with travelling to play in front of what is always a hostile and parochial crowd, which will be a challenge for some of the newer players.
Other results from the Pirtek National Premiership saw Waicoa Bay Stallions narrowly beat Southern 24-21. In the U17s, Counties Manukau beat Central Vipers 52-6 while the Southern Scorpions beat Waicoa Bay 38-32. In the U15s, Counties beat the Vipers 72-0, while the Scorpions edged Waicoa Bay 24-22.