Interesting. Never knew that. I first heard about him after he nailed that presidential election and mostly knew him through his political stuff. Got a free copy of his book "The Signal and the Noise" at a conference where he was the keynote speaker. Decent book. Interesting and bright guy. I just am skeptical of some of the quant work done analyzing sports other than baseball.
That's interesting because except for some recent added variance due to the Rockets style of 3 point shooting spreading to more teams, basketball has always had some of the purest data to work with.
If anything, I'd put MLB only behind NFL in terms of random variance big plays plus some other stuff which add more variance to analytical research.