It is often the most under-appreciated group of players on a successful football team.
But it is only when a club struggles to generate points and often has its quarterback on his back that the offensive line gets dubious recognition.
Failing to protect the most important asset of your team could mean the difference between making or missing the postseason. And the task of keeping the quarterback upright is even more difficult if he is inexperienced or prone to injury.
Presented is a list of 12 offensive lines that have the best chance of putting their starting signal-caller on the mend this season.