Originally Published: January 30, 2009
Possible decline limits Ramirez options
With spring training rapidly approaching and Baseball Prospectus 2009 in the pipeline, we can use our fresh PECOTA projections to estimate the marginal gains several teams would make if they signed the free-spirited free agent. The PECOTA forecasting system (invented by Nate Silver before he began predicting the outcome of presidential elections) compares a player's track record, age and body type to the most similar players among a database of more than 20,000 major league player-seasons dating back to World War II, generating a range of performance possibilities which are expressed as percentile scores and centered around a weighted mean.
PECOTA Projections
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