NSW Wins State of Origin Series in Upset Victory Over Queensland

— reporting by AAP

NSW have won the State of Origin series after Nathan Cleary starred in a stunning 30-12 upset win over Queensland in the decisive third game at Lang Park.

Winless in his first three Origin deciders, under-fire halfback Cleary helped the Blues to a surprise 18-0 lead by scoring two first-half tries and stripping the ball ahead of their third.

Game-ending head injuries to veteran fullback James Tedesco and first-gamer Jack Bostock weakened the Blues, who were troubled by the injection of Maroons livewire Reece Walsh in the second half.

Chasing points, the Maroons had a try chalked off that would have put them six points behind in the final 15 minutes, with the bunker ruling Max Plath had been offside chasing Sam Walker's kick.

Player-of-the-match Cleary then nailed a penalty goal that made it a three-score game, all but putting the result beyond doubt.

It marked only the Blues' fourth victory in a decider at Lang Park from 14 attempts, and their first time winning consecutive deciders at the venue following their 2024 triumph.

The victory came after the Blues were written off by all and sundry, having conceded 36 second-half points in a demoralising 20-point Game II loss.

With last year's series loss fresh in memory, coach Laurie Daley faced heavy scrutiny ahead of the decider.

No player had been under more pressure to deliver in Brisbane than Cleary, for so long criticised for his track record in big Origin moments.

The four-time premiership winner wasted little time silencing his doubters on Wednesday night.

After an error-prone start from the Maroons, Cleary had the Blues' first try stepping inside Kurt Capewell at close range and gliding over.

Blues second-rower Liam Martin, back from a knee injury, burst through Cameron Munster and found Stephen Crichton, who flicked to Mark Nawaqanitawase ahead of Cleary's second try.

In the Maroons' next set, Cleary stripped the ball from Selwyn Cobbo to put the Blues into position for another four-pointer through Cameron Murray.

The Blues lost Tedesco in the final minute before half-time when the former captain clashed heads with Maroons second-rower Briton Nikora.

Tolu Koula shifted to fullback, before the Blues were forced into another backline reshuffle when Jack Bostock fell awkwardly contesting a kick.

Walsh and Kalyn Ponga combined to give the Maroons a sniff, the pair helping Cobbo to a try and cutting the deficit to 10.

But just as the Maroons were on the attack again, Jojo Fifita fumbled Walsh's kick into the arms of Bradman Best, who ran 100 metres to score the Blues' fourth.

After Fifita atoned on the right, the Maroons thought they had a fourth try when Koula allowed a Walker kick to bounce up for Rob Toia.

But the offside penalty against Plath thwarted the Maroons and the Blues held on, with Hudson Young crossing late.