SPORTS

The brute forces that move the Miller Park roof.

ONE OF SIX major league baseball stadiums with some form of retractable roof, Miller Park is the only place with a diamond-shaped dome that retracts neatly to reveal the grassy field underneath; all the others involve boring square-shaped configurations. Opening the roof at Miller Park happens slowly, using forces of Sisyphean determination, as a squadron of 10 electric motors called “bogeys” slowly part the roof using 60-horsepower engines, about the oomph of a medium-sized motorcycle. The decision to open or close the roof due to inclement weather rests solely with the Brewers themselves.