That'll be it Melbourne, a simple case of working the angles out, because as everyone knows every shot/cross is a static ball struck by a static player and there's never anything else happening on the field to influence the goalkeeper.
That's why we can be slide rule accurate about where Dai's size tweleves should be planted and because of that we can also accurately judge which goals are Dai's fault and therefore how good a keeper he is and how he compares to his peers.
Maths and science triumph again in sport.
Working on the mathematical equation as we speak, has anyone got the number for Cape Canaveral?