All truly great quarterbacks are clutch. But not all clutch quarterbacks are truly great.
You are about to meet two types of quarterbacks on this countdown. First, there's a group of very good quarterbacks who were at their best at crunch time: in the fourth quarter, in the playoffs, off the bench in a crisis and so on.
After that, we will visit with some legends, ranked not on their overall excellence but on that elusive "clutch" capability. There will be some overlap between the groups, of course. But as this countdown continues, the all-time greats will gradually take over for the pesky gunslinger types.