14/11/03 17:16:14.42 8w4CVdHp0
For example, a genuine game-calling ability that reduces a pitcher's ERA by 0.01,
resulting in a savings of about 1.6 runs per year for the entire team and could
be masked by the statistical variance in the sample size we have to work with.
Players would need to play thousands more games than they actually do to have
enough data to successfully detect such a skill statistically.
「同じ投手を違う捕手がリードしたケースを調べると
盗塁阻止力やキャッチングによる失点の変動（捕手の守備機会）の
影響を取り除くとほとんどランダム（防御率でいうと0.01程度）になる」
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