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THE BOOK--Playing The Percentages In Baseball

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Sunday, February 17, 2008

How many runs is a good fielding SS worth?

By Tangotiger, 09:25 PM

From 1957-2006 (excluding 1999), there have been 50 shortstops that have played at least 1037 games at SS (specifically, at least 28,000 outs).  This is what I did.  In 1977 at Olympic Stadium, ten of these 50 shortstops played there.  In all, their teams allowed 4.15 runs per 9 innings, on a total of 1156 innings.  In the 336 innings that these ten shortstops did not play at Olympic Stadium in 1977, those teams allowed 4.23 runs per game.  It is a reasonable expectation that guys who played the most SS in MLB since 1957 are at least above average fielding SS.  And, this little data here points in the right direction: our good fielding SS, when they were on the field, allowed .08 fewer runs per game than the rest of the league.

I repeat this for all parks in 1977.  I repeat this for all years.  What we end up is the performance of teams with good fielding SS, compared to their counterparts in the same parks in the same years.  What are our totals?

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(11) Comments • 2008/02/18 • SabermetricsFielding
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