Sports news, commentary and rumors.

Researchers at the University of Texas at Austin analyzed every pitch from the 2004 through 2006 major league seasons to explore whether racial discrimination factored into umpires’ decisions to call a pitch a strike or a ball.

Just as discrimination in the labor market can affect disparities in wages, promotion and performance evaluation, the researchers said, possible discrimination by umpires could affect the outcome of games and careers.

During a typical baseball game, umpires call about 75 pitches for each team (they call about 400,000 pitches over the whole season—this figure excludes foul balls), so an umpire’s evaluation heavily influences pitcher productivity and performance.

The researchers found if a pitcher is of the same race or ethnicity as the home plate umpire, more strikes are called and his team’s chance of winning is improved.

The power to evaluate players’ performances disproportionately belonged chiefly to white umpires, while negative calls particularly impacted minority pitchers, Hamermesh said.

But, this behavior diminishes when the umpire’s calls are more closely scrutinized—for example at ballparks with electronic monitoring systems, in full count situation where there are 3 balls or 2 strikes, or at well-attended games.

This is one of those dirty little secrets that really makes you think.