“If you think about the concept of zone coverage, you were going to make the quarterback throw to a hole and have somebody go physically hit the receiver, and at that point, you hear the term ‘alligator arms,’ ’’ Snead said. “Well, that’s now out because of safety concerns. “These quarterbacks are so good now, the timing, they can throw to spots because every zone defense has a route that can beat it, and the great quarterbacks know it post-snap, and they throw to spots and the receiver gets there. “I think you’re going to see over the next 2-5 years the evolution of maybe new coverage schemes based on that.’’