There are no perfect football players. Even the best players in their best NFL seasons will not do everything at the highest level.
This is especially true for quarterbacks. We have so many stats now that we can track quarterbacks in different situations and against different coverages and amounts of pressure. Whether it is third down, man coverage or facing a blitz, we know NFL quarterbacks have weaknesses.
I delved deep into our data at Football Outsiders (as well as ESPN Stats & Information's numbers) to identify weaknesses for the starting quarterbacks of all 32 teams.