Ken Anderson
The Bengals have quietly enjoyed some brilliant quarterbacks without experiencing the success of other franchises. Anderson was their star man for over two decades but arguably held on for too long. Sometimes players overstay their welcome and Anderson did.
In the end, he barely featured in his final two seasons for the franchise. Then he fell behind Boomer Esiason in the pecking order and never regained his place. The writing was on the wall for Anderson because he shouldn’t have risked injuries. But he continued playing because he loved the sport (via Bleacher Report).