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You'll also want to take HR out of the denominator, as those aren't balls in play.
Incidentally, you should expect to continue to see deviations between players for 2003 as no one is saying that there won't be differences between pitchers' BABIP within a given year - the thing is that those differences have little to no predictive power. For the most part, having a low (or high) BABIP in one year does not mean that you'll have a similar year the following season.
In fact, those within-year differences are a large part of why DIPS matters ... using a component or DIPS ERA has more predictive power than conventional ERA.
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