New South Wales coach Brad Fittler has been left looking like a genius again as NSW humiliated Queensland in a history-making thumping in Perth.

The Blues pulled off their second biggest victory in the history of State of Origin, levelling the series with an emphatic 36-6 victory.

They'll now head to Sydney for the series decider bursing with confidence. The result leaves the Maroons' completely devastated and shell-shocked after they conceded 32 unanswered points

The Blues got off to the perfect start on Sunday night, racing out to a 18-6 lead at half time.

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The mauling turned into a historic ocasion in the second half as the Blues levelled the series in dramatic fashion.

New South Wales shut the door on Queensland with 20 minutes still to play in a famous Origin thrashing in Perth.

Josh Addo-Carr's 57th minute try made it five tries to one for the Blues and took NSW's lead out to 32-6.

The Blues again found a hole in the Maroons' right edge defence when Wade Graham put a neat kick into the in-goal.

Addo-Carr then won the race to dive on the loose ball.

The try completed 20 minutes of total domination from the Blues.

"It is officially a smash up," Maroons legend Paul Vautin said.

"They are running riot in the second half on the back of six penalties, all legitimate penalties. Field position. And the amount of ball they have had. They are just giving it to them."

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Addo-Carr made it a double in the final 10 minutes when Damien Cook again orchestrated a line-break down the Maroons' struggling right edge defence.

Cook identified an overlap down the right side where the Maroons were caught two defenders short. He then got on the outside of Daly Cherry-Evans before the Blues passed it through a series of hands out to Addo-Carr on the wing.

It took NSW to a thumping 38-6 lead, the second biggest Blues margin ever seen in State of Origin.

See how the game unfolded below: