Gennaro: Pitching in all the wrong places

From SABR President Vince Gennaro at Diamond Dollars on January 8, 2013:

In the era of multi-purpose stadiums in the 1970s and 1980s, it seems that there were more similarities across the spectrum of ballparks than there is today. In the post-new Comiskey era, which began with Camden Yards, we’ve brought quirkiness back to the ballpark. We may not have returned all the way back to Ebbets Field, the Polo Grounds or the Baker Bowl, but today’s ballparks certainly don’t look alike. There are enough extreme characteristics in some of today’s parks to have a profound impact on players’ stats and careers.

The impact of parks on pitchers shows up several ways, but the most vivid is in the HRs a pitcher yields. Let’s look at two pitchers who have changed ballparks over the careers—moves which were beneficial to one and detrimental to the other. Aaron Harang began his big league career with Oakland, but then moved to Cincinnati, before he moved back to the west coast with San Diego and now the Dodgers. For right-handed (RHH) and left-handed hitters (LHH), the HR park factor for Cincinnati is 143 and 121, respectively (from Bill James Handbook—the average of the most recent 3 years).

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This page was last updated January 8, 2013 at 11:33 am MST.