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来自维基百科,自由的百科全书
三振率(英語:Strikeouts per Nine Innings),又稱奪三振率、K/9值,是一種棒球術語及統計數據,指投手每九局平均投出的三振數。此指標可顯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態為三振型投手。用九局平均是因為一場標準的棒球比賽正好是九局,約略隱含著此投手一場比賽能三振多少位打者。
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