Zone blocking scheme outdated?

[HPF Bob]

Those with long memories may recall how the Ravens used to routinely brutalized the Broncos whenever the two teams met. Considering Kubiak is essentially running the Broncos playbook and Ryan is running the Ravens', the result in hindsight might have been more predictable.

I wouldn't pronounce the ZBS dead. Very ordinary RBs still have very good days using it. However, the ZBS was dealt a big blow when the cut block was outlawed. Cutting defenders neutralized some of the height/weight differential that made lighter ZBS lines effective against the big bullies of the league. With that gone, lines have to rely on quickness and positioning instead of opening holes by getting defenders down on the ground or getting them more concerned about their knees instead of the ball carrier.