In 2008, after Melbourne and New South Wales representative Matt King announced he would be leaving the Storm to play with the Warrington Wolves in the Super League, Folau filled the void as the starting centre for Melbourne. After seven rounds of the 2008 season, Folau was named on the wing in the starting squad to represent Australia for the second time in the Centenary Australia vs. New Zealand test, contributing a try in the 28–12 win for the Kangaroos. Folau was then selected in the starting squad as a winger in the Queensland State of Origin Team for game I of the 2008 Series. On 21 May 2008, Folau made his debut for Queensland at ANZ Stadium Sydney. In the final minutes of the match, Folau scored a try on debut, but Queensland lost 18–10 to New South Wales. Folau retained his position for game II at Suncorp Stadium in Brisbane. Folau contributed one of the Maroons' four tries in the 30-point win over the Blues, levelling the series. In the final game of the series, game III, Folau scored two leaping tries and was awarded the "Man of the Match" in Queensland's 16–10 win over NSW.