KNIGHTS coach Adam O'Brien believes Kalyn Ponga has silenced the doubters once and for all and will only improve after his inspirational performance for Queensland in Wednesday's State of Origin series decider.
In his seventh Origin appearance, Ponga was named man-of-the-match after a virtuoso display in which he scored a try, made three line breaks and gained 262 attacking metres as the Maroons clinched the title with a 22-12 triumph at Suncorp Stadium.
