John Patterson (pitcher)
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John Hollis Patterson is an American former professional baseball pitcher. He played for the Arizona Diamondbacks and Montreal Expos/Washington Nationals of Major League Baseball from 2002 to 2007.
Patterson with the Washington Nationals in 2006
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
John Patterson (pitcher)
…printed on official team letterhead, and he signed with the Arizona Diamondbacks for $6.075 million. After a solid 2002 rookie season where he had a 3.22 earned run average (ERA), he had a disappointing 2003 season with the Diamondbacks. Patterson was traded back to the Expos prior to the 2004 season in exchange for Randy…
The lowest career ERA is 1.82, set by Chicago White Sox pitcher Ed Walsh.