In practice, football coaches occasionally like to throw a "sudden change" period into the middle of a normal routine. It's meant to prepare the players for the way circumstances during a game can pivot in an instant. One second your defense may be catching a breather on the sideline, the next second they're on the field protecting the goal line after a turnover.
The Tampa Bay Buccaneers and the Miami Dolphins are facing a sudden change of a much larger magnitude. The impending landfall of Category Five Hurricane Irma has forced the season opener between the two teams in Miami to be postponed until Week 11, when the Buccaneers and Dolphins were going to be on a bye.