Cities and stadiums have increased access to shade, cooling areas, and water for spectators, as well as medical personnel stationed in fan zones, to prevent illness caused by extreme heat.

There have been disrputions because of thunderstorms, but heat is set to be the biggest factor affecting matches in the round of 32

A dangerous heat wave is expected to sweep across much of the central and eastern United States beginning Tuesday and lasting through the July 4 weekend, when the country…