Tony Romo
Amazingly, Romo survived for 14 seasons with the Cowboys because is one of the most overrated quarterbacks ever. It felt as if ‘America’s Team’ kept waiting for him to become good but he never really did. Romo had one of the NFL’s top defensive lines and access to phenomenal weapons but his teams never won in the postseason.

One of his flaws was his capacity for shocking turnovers. Meanwhile, he wasn’t the most mobile quarterback and didn’t have the strongest arm. Romo has decent passing statistics but these mask his weak leadership qualities. The future TV analyst never dragged his team through the toughest situations (via Bleacher Report).