Wigan Warriors winger Pat Richards injured his knee during the Super League game with Hull FC on Sunday.
The Irish-Australian professional rugby player could be sidelined for at least a month after sustaining ligament injury.
Coach – Shaun Wane said: “It is a shame to lose Pat, I thought he was terrific at Hull, he had a scan on Monday and he will go and see the surgeon (on Tuesday). He could be out for anything between four and six weeks.”