Four bombed tries could not stop the New Zealand Warriors from upsetting the Sydney Roosters 24-22 in their NRL clash at Aussie Stadium on Saturday night.

The Warriors were denied two first half tries due to dubious forward pass rulings while another went begging when winger Francis Meli couldn't hold onto a Stacey Jones kick in the 70th minute with the line open.

And they had a fourth try sensationally denied in the 50th minute after lock Monty Betham was penalised for starting a fight with Roosters backrower Anthony Tupou.

But the Warriors still managed to turn around a 22-8 deficit after 52 minutes to score three tries in 11 minutes and snatch a miraculous victory in front of 13,789 fans.

In shades of last round's Parramatta-Dragons clash, a fight broke out before Warriors winger Todd Byrne crashed over in the 50th minute.

But unlike last Friday night, the try was disallowed after referee Tim Mander - who also officiated last round's match - penalised Betham for instigating the fight with Tupou.

Last Friday night a fight broke out but play was allowed to continue and Eels fullback Wade McKinnon crossed in what proved to be the turning point in Parramatta's 40-14 victory.

In similar scenes on Saturday night, Betham scuffled with Tupou 60m away from the play before wrestling the backrower to the ground and throwing a punch.

After Byrne crossed, the touch judges alerted Mander to the fight that covered 20m and Betham was deemed the instigator.

"That's crazy stuff. You instigated it. No try," Mander told Betham.

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