9. Tony Romo (underrated)
Tony Romo’s shortcomings as a quarterback are well established, and perhaps more established than any other quarterback because Romo was the quarterback of the Dallas Cowboys. But, despite his lack of playoff success and record with injuries, Romo had an excellent career.
Romo trails just Troy Aikman and Roger Staubach for wins as Cowboys quarterback and has the fourth-best passer rating in NFL history. The men he trails are all certain to be Hall of Famers when they retire. Yet, people will always underestimate him because he failed to get the Cowboys to the conference championship game.