Padraig Harrington injured after being struck by amateur at coaching session

Three-time major winner Padraig Harrington has withdrawn from this week's FedEx St Jude Classic after being hit on the elbow by an amateur during a coaching session.

Harrington has played just seven events in 2017 after undergoing surgery on a trapped nerve in his neck in March, but had been due to play his third tournament in succession in Memphis.