700 makes some great points.
You can't possibly come up with a formula for "clutch". The fact of the matter, and the point I'm trying to make, is that Arod is an under performer in the playoffs, and hasn't got many "clutch" hits in pressure situations. It's not mathematical, it's psychological. Familiar with the Inverted "U" theory? It basically states that an athlete's performance will go up as their intensity increases to a point, and then will begin to decline past that point as their intensity continues to escalate. It looks like an upside down bell curve. In the biggest moments, the human element comes into play, some rise to the occasion, others do not. Playoff baseball creates a level of intensity that Arod simply hasn't been able to deal with, his performance diminishes, he "folds", he "chokes".
I wish I could find a link to Tom Verducci's article "Does Clutch Hitting Truly Exist". In it, the biggest stat boy of them all, the Boy Wonder Theo Epstein sat on the fence and wouldn't deny that clutch hitting exists. And he hired Bill James as a consultant!
So screw μ ! :harhar: