Month: July 2013

A New Sabermetrics Formula to Predict Postseason Teams

Bill James introduced his formula for predicting a team’s expected winning percentage (Expected W%) for a season. The formula is Expected W% = (Runs Scored)2 / [(Runs Scored)2 + (Runs Allowed)2] and is called the Pythagorean Theorem of Baseball.  Bill James’s rationale for his theorem was that the number of runs a team scored (RS) compared to the …