HSBC Sydney sevens

The game's governing body said it had concluded its investigation into the alleged breach of Law 3 by the NZ sevens team during last weekend's Pool A game.

While Law 3.2 provides for a penalty kick to be awarded when a team fields more than the maximum number of players, the referee was not aware of the additional Kiwi player on the field before the end of the match, according to the statement.

Video footage appears to show eight​ Kiwi players on the field in the lead-up to Ardie Savea accepting an inside pass from captain Tim Mikkleson and scoring to level the score at 17-all.

Australia are set to play England in the quarterfinals on Sunday, but World Rugby officials may ask for a please explain from the New Zealanders whose schoolboy error could potentially see them lose all points for the match.

The Allianz Stadium is hosting the tournament after its move from the Gold Coast and both days have been sold-out for the fourth round of the HSBC World Rugby Sevens Series.

There have been three different champions in the three tournaments so far in Dubai (Fiji), Cape Town (South Africa) and Wellington (New Zealand), and all eyes will be on the tournament to see who finishes on top.