William Lawrence "Seattle Bill" James was an American Major League Baseball pitcher. He was given a nickname to differentiate him from his contemporary, "Big" Bill James.
Earned run average
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In baseball statistics, earned run average is the average of earned runs allowed by a pitcher per nine innings pitched. It is determined by dividing the number of earned runs allowed by the number of
The lowest career ERA is 1.82, set by Chicago White Sox pitcher Ed Walsh.