West Coast midfielder Jack Graham will undergo shoulder surgery after sustaining an injury during Sunday’s clash against Geelong.

“After further investigating and assessing Jack’s shoulder this week, and consulting with the surgeon, we have decided the best course of action is for Jack to undergo an operation to stabilise the shoulder joint,” High Performance Manager Phil Merriman said.

“We will have a clearer understanding of Jack’s expected timeframe to return to play following surgery, but at this stage we expect he will miss an extended period and is unlikely to be available before our mid-season bye.”