Practice made perfect for Cooper Cronk in State of Origin III as the Maroons halfback sank a monster field goal to give a courageous Queensland its seventh straight Origin title with an epic 21-20 win over NSW at Suncorp Stadium.

Cronk sank the match-winner, along with the hearts of the big-talking Blues, in the 75th minute when he banged the ball between the posts from 39m out to jubilant scenes from the Maroons faithful