Ground rules for roofs will affect Rays-Brewers World Series

MILWAUKEE – Look up during the World Series and you’ll see the roofs at American Family Field and Tropicana Field. There’s a chance this could be the first World Series played entirely indoors. And there’s a chance that a ball striking one of those roofs — or the supporting structures, in The Trop’s case — could impact one of the games.

They are not just green steel in Milwaukee…