Yahoo Racing is powered by Motorsport Network, providing expert reporting, analysis, and insider access across the world’s top racing series. How to calculate SIERA: You're going to need a lot more ...
Part 1 of this series marked the introduction of Skill-Interactive Earned Run Average, or SIERA, an ERA estimator that more accurately gauges the run-prevention skills of a pitcher relative to his ...
What it stands for: Skill-Interactive Earned Run Average, developed by Matt Swartz and Eric Seidman (first at Baseball Prospectus, and then later revised by the same authors at Fangraphs). How to ...
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