Ethnicity And The Strike Zone

Do umpires favor pitchers who are of a similar ethnic background? According to an article in the American Economic Review they do. The summary of the study and a link to the original article is at Ars Technica.

Perhaps more significantly, the authors also compare game statistics for matching player/ump combinations in unmonitored ballparks. Here, the numbers are very consistent. For both white and minority pitchers, winning percentages went up by about five percent. Everything else—the number of hits and runs scored against them, the walks they gave up, and the number of home runs hit—all went down (so did strikeouts, although the effect was very small).

We need more eyeballs.

3 comments… add one

  • Robot umpires are the only answer.

    krueg September 9, 2011, 2:24 pm
  • Besides the different size fields, the different strike zones are the biggest travesty in the sport. Pitch F/X should call the balls strikes. Just make it automatic. Have a HAL-like scoreboard light up and speak the call in Richard Nixon’s voice. Make the plate umpire a chair umpire. He oversees the action and replays from a booth on the field. He can change any call based on the video evidence.

    James YF September 9, 2011, 3:50 pm
  • I find this post very unconvincing because it was not written by a white person.
    Also, now we know why fat, white Babe Ruth had such a glorious career.

    IronHorse (YF) September 9, 2011, 8:19 pm

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