As statistical analysis takes a larger role in professional sports, some key assumptions about the way things have always been done is being challenged. There is a high school coach who never punts. Ron Rivera has decided to go for it on every single fourth down. But making snap decisions that decide the outcomes of games and seasons carries enormous pressure and responsibility. Evaluating all the possibilities is difficult in a short amount of time. Luckily, we've put together a handy flowchart to help football coaches decide what to do when facing a 4th down.