保送率(英語:Walks per Nine Innings),縮寫為BB/9, 是一種棒球術語及統計,指投手平均每9局球所投出來的保送。投手可能因為四壞球、故意四壞球、觸身球三種保送而使打者上壘。此數值關係到投手的控球精準度,越高代表投手的表現不佳,容易讓打者上壘,增加失分風險。
保送率計算公式:
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