OK, good, looks like I have found somebody who studies these things. Maybe you can explain: why does BABIP fluctuate so much year to year considering a random coin flip or die roll would never give such wild results. For example if the true odds of a weighted coin were 30% heads, over 400 flips (full season balls in play), the odds of getting 36 or 38% heads would be very very small. Yet for a given player, BABIP is supposed to be random.