Melbourne NRL forward Tim Glasby is in doubt for the opening State of Origin match for Queensland after fracturing his thumb.

Glasby will undergo surgery on Thursday after suffering the injury 10 minutes into the Storm’s 50-10 win over the Warriors in their NRL Anzac Day clash.

Storm coach Craig Bellamy said he was likely to be sidelined for four to six weeks, with the first Origin match on June 6 at the MCG.