The quarterback is the glamor position in the National Football League.
And for good reason.
He is responsible to know not only his own offense better than anyone else, but what the opposition's defense is going to do in game situations.
It's a thinking man's position.
The quarterback has only a split-second to reach decisions that could make or break his team.
Football in the NFL is based on speed and quick thinking. The only way a coach can know how a quarterback will react to it is to throw them in the fire and see what happens.
That's why it's so hard finding a bona-fide superstar in the draft. You never know how someone will react when faced with that kind of adversity.
And the last thing any NFL coach wants is to have instability at the position, especially during training camp. It can dampen a season before it even begins.
With that in mind, here's a look at six teams who are faced with serious quarterback battles as training camp looms.