Leave aside the performance of the team yesterday - we all just accept that was dire. But it wasn't the worst performance of the day. For that we need to look at the ref and his linesmen and the fourth official. They were as clueless as it is possible to be. So we should win this cup, we are stronger than the teams left in it, we have done well enough against all but the top clubs this season. We are clear favourites. But never underestimate the incompetence of the guy in the middle who may well end up the key player in this. Any game can be ruined by them, any result twisted 180 degrees. There's an element of lottery to every match and no guarantees.