For some NFL quarterbacks such as the San Diego Chargers' Philip Rivers, they are simply in horrible situations which results in their coaching staffs asking them to do things well beyond what they are capable of given their skill set.
It's not a fair situation, but one that happens all too often in today's NFL. It's typically a result of a mediocre franchise not building properly around its quarterback, which in turn usually comes back negatively on the quarterback before the organization.
Rivers and others simply are not capable of overcoming an inadequate roster. Let's break down five NFL quarterbacks who are simply asked to do too much.