Posted:

**Tue Apr 24, 2007 10:32 am**StlSluggers wrote:ps - BABIP works for hitters because the theory is that most batters actually can't control where their ground balls go (note that BABIP only applies to ground balls). Since players can't control the location of their ground balls, luck is a major factor regarding whether or not they end up with a hit (generally, a single). It turns out that almost all batters are subject to this "rule," and the mean of ground balls that end up as hits tends to hover right around 25% (or .250).

Sorry... I was confusing BABIP and BHIP (singles average):

Singles Average (BHIPx%)- An indicator which measures the percentage of batted balls which are hit into play and are subsequently registered as singles (Singles/(AB-K-2B-3B-HR)). The typical singles rate for the entire MLB universe is around .250. Every year there are outliers that hit significantly below or significantly above this average...of these, 80 to 85% are able to reverse that trend the following season. Using this historical indicator, we can surmise (based on batting average) which players will have a comeback or drop-off season.