How well do you know your all-time greatest quarterbacks?
Utilizing various resources at our disposal (among them, the NFL Record Book, Pro-FootballReference.com, and the folks at the Elias Sports Bureau), we've cooked up a quiz on the best of the best NFL signal callers. Try it out and see if you pass (pardon the pun).
One hint that may help you out along the way: No quarterback is an answer to more than one question.
Questions compiled by Mark Simon, ESPN Research