Kangaroos fullback Darius Boyd (pictured) says despite sweeping through their Four Nations matches without a loss, the Australian side still have plenty of improvement in them.

The Four Nations title has been at the top of the sides goals since losing the previous tournament to the Kiws and the two sides will meet at the home of the Liverpool soccer club on Monday morning.

Boyd says while the side has played well in patches, its that very patchiness that has the potential to allow the Kiwis in for an upset.