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Anthony Castonzo: C+
Castonzo was the only lineman that was even passable today, getting a few key blocks in the run game and not getting completely overwhelmed in pass protection. He did give up a few hits and hurries, but overall was not nearly as bad as he was the last time these two teams faced.
Seth Olsen: D-
Olsen nearly single-handedly blew this game for the Colts struggling in both run blocking and pass protection in the first half. He got destroyed in short yardage situations, allowed the pocket to collapse nearly every play, and was simply dominated by Karl Klug.
Samson Satele: D+
Not as bad as Olsen, Satele was a major part of the unstable pocket in the first half, and his replacement A.Q. Shipley seemed to help the line's performance in the second half. I'd give a B to Shipley, and still advocate for him to replace Satele in the starting lineup.
Mike McGlynn: C-
I'm not sure if McGlynn directly allowed any sacks, but his side of the line continues to breakdown and make Luck leave the pocket, especially if left one-on-one with a defensive tackle. The right side of the line also fails to get a push in the run game consistently.
Winston Justice: D+
Justice allowed multiple sacks and hits in the first half, including the hit that led to Andrew Luck's pick-six. After a good start to the season, Justice has really regressed in recent weeks.