Towards the end of the game between Fulham and Blackburn in the EPL last week we witnessed a frightful collision between Mark Schwarzer (Fulham goalkeeper) and David Hoilett (Blackburn striker). The forward was chasing a high ball into the penalty-area and had jumped to head it onward from four yards outside the box. Meanwhile Schwarzer came charging out of his goal and left the penalty-area to clear the danger, presumably by heading away. The two players collided at something like 35 or more miles-per-hour and ended up prostrate. Hoilett did not get up.
He was seriously injured, treated for more than six minutes by medical staff, before being carried off with a neck-brace and on a stretcher to have four stitches put in a cut on his head. The goalkeeper was more fortunate, soon on his feet, and apparently none the worse for wear. So what is the decision that the referee has to make?