Johnathon Thurston says he has no doubt he’ll be fir for Origin Game One on May 31.

The Cowboys skipper didn’t play in last nights 18 – 14 defeat at the hands of the Sharks but says he came very close to being available.

Thurston (pictured) is on the verge of breaking the record for the most consecutive State of Origin games and he told the ABC that he has no doubt he’ll be fully fit to turn out for Queensland on the 31st.