The importance of a cohesive, capable set of blockers is impossible to overvalue. And yet, 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 them.
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.
