I've just been wondering- is there a reason why ISO is the preferred and accepted statistic to measure a batter's power-hitting ability without taking batting averages into account? My own issue with ISO is that it is influenced by batting averages to some degree. A batter with a .300 BA and a .150 ISO has fewer XBH as a proportion of his hits than a batter with a .100 BA and a .150 ISO. In the latter's case, the hitter seems to rarely accumulate hits, but most of the hits will go for extra bases. I don't know if I'm missing the point of ISO- which for now, I'm assuming is the case. Why isn't something like SLG%/BA used? In that case, a batter with a .300 AVG and .150 ISO and a batter with a .200 AVG and a .100 ISO would have identical SLG%/BA statistics. Given that such player has gotten a hit, this would indicate the amount of power that the player hits with? Any clarification or comments are greatly appreciated.
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