Pitching and Fielding, Part Four

February 06, 2004

In which I uncover a mistake.

I’ve been preparing an article that compares the relative outcomes of the three systems for splitting defensive Win Shares between pitching and fielding.  As a result of comparing my proposed system with the original James version, and the Charlie Saeger version, I realized that some of my formulas were “overcorrecting.”

I won’t get into the math right now, but suffice to say that I was essentially double-counting my adjustments for errors, double plays, outfield assists and passed balls.  So I’ve run the numbers again, and I have attached a new table comparing the three systems.

Once again, I’ve highlighted the teams that seem to vary the most, and I’ll follow up over the weekend with a summary of the differences between our systems.

James Charlie Studes
Anaheim 66.0% 65.5% 67.9%
Arizona 71.1% 73.8% 78.9%
Atlanta 70.3% 67.2% 74.8%
Baltimore 67.1% 68.2% 70.1%
Boston 71.8% 74.2% 79.0%
White Sox 69.6% 68.0% 74.0%
Cubs 69.9% 71.1% 79.3%
Cincinnati 67.8% 69.7% 75.6%
Cleveland 67.1% 65.1% 70.7%
Colorado 68.0% 68.9% 69.7%
Detroit 63.0% 59.6% 70.1%
Florida 69.7% 68.2% 74.3%
Houston 68.5% 64.3% 70.3%
Kansas City 67.6% 62.2% 66.8%
Los Angeles 72.2% 72.6% 80.1%
Milwaukee 66.3% 67.9% 71.9%
Minnesota 68.6% 70.0% 71.9%
Montreal 69.1% 68.1% 71.4%
Yankees 74.3% 79.8% 81.9%
Mets 66.9% 65.8% 69.4%
Oakland 71.2% 70.7% 76.0%
Philladelphia 69.8% 71.7% 74.3%
Pittsburgh 67.8% 67.4% 72.2%
San Diego 62.5% 51.0% 66.2%
San Francisco 67.8% 61.9% 67.5%
Seattle 66.1% 62.0% 66.1%
St. Louis 64.3% 57.5% 61.4%
Tampa Bay 61.3% 52.5% 59.4%
Texas 65.7% 58.1% 69.6%
Toronto 69.4% 70.7% 75.0%


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