Playing the quarterback position in the NFL has long been viewed as the most difficult job in professional sports, a fact that only has been magnified in recent years by the increasing complexity of defensive schemes around the league.

For decades, signal callers leaned heavily on half field reads post-snap to identify and attack coverages, providing a simplified approach that worked quite effectively against static defenses. However, in the modern NFL, while that approach has not been completely discarded and still has a time and place, the proliferation of well-disguised coverages has put a lot more on quarterback’s plates, making it far trickier to gauge whether an opposing defense is in man coverage, split-zone coverage with the middle of field open, or closed-zone coverage with the middle of the field occupied.

Early on his career, like all young quarterbacks who have to adapt and learn how to successfully attack complicated NFL defenses built around the art of - or at least the guise of - deception, Sam Darnold endured plenty of growing pains coming out of USC as a highly-touted top-five draft choice.