Great analysis @
CyberB0b
A couple things to add from my thoughts...
When we play zone coverage, our corners are reading the QB's drop, you can see their heads turned inside pre-snap. The technique is to read the drop and mirror the backpedal to the QB's steps, once the QB hits his landmark and gets read to throw, the corner plants and drives on the route while keeping tabs on the WR. Watch the tape and see how Claiborne is always late to the QB's steps. His technique is awful and he has no clue when to plant and drive, he's guessing. If I had to take an educated guess, it appears that the corners are not studying formations and QB tendencies enough. Playing zone coverage requires a lot of film study to gain an understanding of what the QB likes to do in certain WR splits and formations. The best way to do this is to keep a count of how long the QB usually takes to hit his landmark, so that the corner keeps an internal counter is his head to know when to
anticipate the throw. He should also be reading the stem of the route to
anticipate what route is being run. It's hard to do, but these corners are not even doing the fundamentals right that could improve there play dramatically.
Which brings me to the point I want to emphasize with these corners. The #1 reason they are terrible at zone is because they are not reading the QB like they should. Part of the technique requires anticipation and they are always reacting to what the QB is doing which is why they are constantly late. For example, if the down and distance is 3rd and 8, and I line up in off coverage 9 yards at the sticks, I should be backpedaling to mirror the QBs dropback while seeing the WR in front of me. I should already have an idea of what routes are going to be run based on my film study and game plan to include any alert calls from a blitz.
3rd and 8 should dictate short routes in the tree, because at that distance the offense shouldn't get too greedy with a lead. This is what factors into situational football. The coaches should be telling the players this during the game when making adjustments. This falls on the coaching more than anything, their technique is bad and they are not being taught proper zone principles.
These corners are awful but the coaching is not good from what I'm seeing either.