Everyone is an expert ex post facto; nothing like 20:20 hindsight. TV statisticians predict, on the basis of what players who are high up on the leader board averaged on particular holes and on particular days from all of their cumulative outings over the years at the Masters, what the likely outcome on Saturday and Sunday will be. It is as though players do not age, the swing does not shift, the weather has no effect and the strength of mind does not waver in the face of changing circumstances. The fact is that each year is a completely new