Keep in mind that’s not just the act of pulling, it is also the manner in which is able to locate the defender and neutralize them on the outside. For the outside linebacker, setting the edge is vital when playing the run. What DeCastro was doing to Justin Houston as seen in the first example, was to trap him inside; thus not even giving him the opportunity to touch him.
When it comes to the counter/power plays that the Steelers run, they have been extremely effective at it because of people like DeCastro leading the counter and making the initial block to set everything in motion; if this is not done correctly, the counter play fails.
Back in 2014 against the Bengals, they ran this counter play at will and the Bengals couldn’t handle it; DeCastro was the lead blocker on each of those counter plays.
So I will say this, having an All-pro running back helps, but it’s not necessary if all the o-linemen are doing their assignment correctly and if the pulling guard knows what he’s doing.
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