The impact of a cohesive, capable set of blockers is impossible to overvalue. And yet, while these are the reasons that everything else on the offense works, they incur a high rate of injury and the shifting of blockers in and out of the lineup is usually unnoticed despite the significant bearing on success. Unlike every other offensive player, their job is to engage the defense, not try to avoid it.
This is a very complex part of every football team. O-lines deal with injuries, new coaches and schemes, depth chart moves, schedule challenges and the effects of when new quarterbacks and running backs are used. Every play is like conducting a symphony in the middle of a riot.
This ranking considers where each O-line ranked last year in certain metrics, their additions and losses in linemen, the continuity of the unit and scheme, and plus the impact of the rest of the offense and schedule.