Hitting Power in Domed Stadiums

Zubin Jelveh at Portfolio offers more evidence that weather is not responsible for the power declines in baseball. He looks at slugging percentages in domed stadiums, where temperature ought to be less of a factor.

3 Responses “Hitting Power in Domed Stadiums”

  1. Zach says:

    I’m not refuting what the evidence suggests, but I think there ought to be a few things to keep in mind. First, obviously, this is a far smaller sample size than league totals. Second, and perhap more importantly, is the fact that a the Blue Jays, Rays, Twins and D-Backs contribute disproportionately to those numbers since they their homes games indoors. Player turnover would play a large role those numbers. For example, in the case of the Twins, we might expect slugging percentage in the Metrodome to rise since some lower quality starter is pitching a fifth of the games there instead of Johan Santana. Also, we might expect SLG% to fall in the BOB, Tropicana, and Skydome due to the vast improvements in the Rays’, D-Backs’ and Jays’ pitching staffs over the past couple of years. The same logic can be applied to good hitters joining/leaving those same clubs.

  2. Chris Wexler says:

    Seriously, my Twins are in the sample. The Twins’ opening day 3, 5 & 6 hitters (Mauer, Cuddyer & Young) have combined for one home run. One.

    Sure they score runs, but it is via the time tested strategy of death by 1,000 singles.

  3. JC says:

    This sample doesn’t tell us much on its own. And the potential biases that you mention are problematic. But combined with the data on outdoor play, this is another piece of evidence that weather only explains a small part in the decline of home runs.