Has the league figured out the cover 2?

[MTK]

If this wasn't happening elsewhere we could write this off as an excuse, but Williams has never been much of an excuse kinda guy and the fact other teams are struggling with the same thing makes this a valid question, has the league caught up with the cover 2?

The league is always evolving, remember back in the 90's the zone blitz was a big deal and it was made famous by the Steelers. Now you don't hear about it as much. Teams are still running it, but offenses have adjusted and caught up with it.