CBS says:
Run Blocking: Might not be explosive out of his stance, but plays at a good pad level. His knees are a little too bent to redirect, but his shoulder pad level rises with power when trying to sustain movement throughout the play. His best attribute is his ability to down block and with his lack of ideal height and his bow legs, moving him inside to guard is expected at the next level. He finishes with good balance and has the lower body strength at the point of attack to root out a linebacker and widen the rush lane. He is a powerful straight-line blocker, who delivers a strong punch to shock and jolt. GRADE: 7.3
Pass Blocking: When working in-line or in unison with tight ends and guards, Brewster does a good job of keeping his head on a swivel and his arms inside his frame to sustain. When he is isolated on the edge, his bow legs and poor hip snap are evident in his inability to mirror the quicker pass rushers. When his feet stop or he gets too top-heavy, it opens the backdoor and leaves his quarterback exposed. He can kick and slide, but is better pass protecting inside, where his lack of explosion can be covered up. He is very active with his hands, though, and can dominate vs. slower bull rushers, as he uses his hands well to control and steer away. GRADE: 6.4
Compares To: DARYN COLLEDGE, Green Bay -- Brewster has a low center of gravity, but like Colledge, he might be better served as an offensive guard, where his short pulls, low pad level and hand punch will be more effective widening the rush lane. Lacks the explosive first step or lateral mobility to handle speedy edge rushers, but he is a tenacious blocker who plays with aggression. At this time, he looks like a better interior prospect than playing on an island at tackle.
http://www.cbssports.com/nfl/draft/players/556758