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来自维基百科,自由的百科全书
三振率(英语:Strikeouts per Nine Innings),又称夺三振率、K/9值,是一种棒球术语及统计数据,指投手每九局平均投出的三振数。此指标可显示投手能以三振造成打者出局的能力,越高代表此投手的型态为三振型投手。用九局平均是因为一场标准的棒球比赛正好是九局,约略隐含着此投手一场比赛能三振多少位打者。
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