BATTING: RBI over- and underperformers
Jun 25 2012
A few years ago BaseballHQ.com identified a formula for calculating Projected RBI (pRBI), a rough measure of how many RBI a batter should have given his own performance, his position in the batting order, and his team’s ability to get on base.
At that time, and in subsequent republications in the Baseball Forecaster annual, we suggested that these pRBI formulas should be applied after 70 team games or so to find batters whose actual RBI were +/- 9 from their pRBI, because a correction might be coming.
Method
To check the RBI-pRBI variances, we checked every MLB Batter with more than 100 AB through June 24.
We used baseball-reference.com’s batting-order summaries to slot each batter into one of the three batting-order...
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