Wednesday, April 04, 2007
The juiced ball
Excellent analysis from Eric Walker from an old article. He neatly shows the change in run scoring was a sudden spurt in 1992-1994, while the years before and after had their own plateau with a certain variation. Sudden one-year jumps in plateaus are not caused by longterm trends like change in player personnel, player conditioning, etc. And expansion can hardly explain a shift of such magnitude. Parks could cause such a change, if you have enough of them changing so quickly, and you can demonstrate the changes. So what we’re left by is what everybody thought almost 15 years ago: the ball was juiced.


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