Originally posted by shockfan89_
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Bill James came up with the "baseball pythag theorem" - which provides a very good prediction on winning %. You can easily do trade studies and what ifs playing around with runs scored and runs allowed per game to see what could have been.
W%=[(Runs Scored)^2]/[(Runs Scored)^2 + (Runs Allowed)^2]
More accurate versions of the formula use 1.81 or 1.83
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