Landing a franchise quarterback is the single most difficult task to accomplish in the NFL. Free agency and trades rarely yield starters, and quarterback value is in the midst of a large bubble in the draft, forcing teams to take passers before the relative risk and reward dictates they should go.
Meanwhile, teams that have their quarterback situation solved can continue to take blue-chip players, widening the gap between the haves and the have-nots.
Some teams just can't get it right no matter how hard they try. The landscape of drafted quarterbacks is littered with busts, but a few teams rise to the top when asking who is the worst at drafting quarterbacks in the NFL.