Denver didn't have a single point on the board when the fourth quarter began and trailed for a majority of the game. The Broncos needed all 60 minutes to beat the New York Giants at some, but it wasn't without some drama.
We can't pretend that the officiating didn't play a factor here - the Giants were gifted a plethora of first downs on penalties that Denver got called for, and the Giants also managed to score touchdowns on a couple of fluky plays. When you mix all of that together, you get a 19-0 Broncos' deficit entering the fourth quarter.