RESEARCH: Pitcher-Positive Outcomes, pt. 2

In our last R&A article, we looked at evidence for the sustainability of what we called “Pitcher-Positive Outcomes” (PPO).

We identified K% and Infield Flyballs (IFFB) as obvious PPOs because they result in essentially 100% out rates, and further, do not allow baserunners to advance.

Based on out rates for various trajectory/hardness of hit combinations, we added Medium-Hit Flyballs (MFBs) to the list of PPOs.

Then we looked at the overall correlations of these outcomes from one year to the next, and from two years to a third.

In the first phase of this study, it appeared these outcomes might indeed be at least partly repeatable. As a group, pitchers with elite PPOs in a given season showed a strong correlation with elite PPO...

Almost!

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