Jay Jaffe
99.8K posts
Jay Jaffe
@jay_jaffe
Senior writer @FanGraphs, ex-@si_mlb. Creator of JAWS, author of The Cooperstown Casebook ('17). Not sticking to sports or paying $8. https://t.co/qWmT5giVQN
Brooklyn, what about it? Se unió Ekim 2009
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