Brisbane Broncos, Maroons and Australian Kangaroos legend Corey Parker joins Martin Devlin on It's Only Ssport, ahead of tonight's State of Origin opener between Queensland and New South Wales in Adelaide. Among his many NRL accolades, Parker played 19 times for his beloved Queensland, winning five series' as well as the 2015 Wally Lewis medal for best player across the three matches. He goes in-depth on his own Origin career, what it means to Queenslanders to represent their state, how tonight's match will play out, and more.