ARP -- Adjusted Runs Prevented. The number of runs that the reliever prevented over an average pitcher, given the bases/outs situation when he entered and left each game, adjusted for league and park. The exact formula for a reliever's ARP for a game is : (ER(sS,P) - ER(sF,P) + IF*ER(s0,P) - R) / pe(P) Where * ER(s,P) is the expected number of runs that will score in the remainder of an inning starting in bases/outs state s in park P, * sS is the bases/outs state when the reliever entered the game, * sF is the bases/outs state when the reliever left the game, * IF is the number of innings the reliever finished, * s0 is a special state for the beginning of an inning (distinct from the state for no outs, none on), * R is the number of runs that scored while the reliever was in the game, * pe(P) is the park effect for park P. 估狗了一下，前几年就好像有人开始用ARP来评估中继後援投手 好了，本来想拿公式来帮几位投手算一下数据，没想到公式一 查到手就傻眼了 orz s0的special state、连park effect也要算，而且被影响到的 数据还占大多数 囧 整个不知道怎麽下手 痴汉大和板上的数据魔人们对ARP有研究吗？ 还请前辈们提供点建议 orz -- 好きだからだよ﹑お前のことが。 この地球上の谁よりも。 --

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