2. Was trading Brett Favre the biggest blunder of all time?
Stop us if you've heard this before, but Brett Favre is retiring. All right, don't stop us because we're doing this anyway. Favre filed retirement papers with the NFL, which doesn't preclude another return. But going back to the beginning of his run, was trading a young Favre the biggest QB blunder of all time? Rank all-time QBs.