If It's Closed, Who Decides What To Set The Thermostat On?

It looked really cold in Chicago last night as the Houston Astros fell behind to the White Sox two games to none in the World Series. The game moves back to Houston tomorrow night where the Astros play in a stadium with a retractable roof. Here's an oddity: Because it is a playoff game, Major League Baseball, and not the Astros, will decide whether the roof is open or shut.