Orakpo and Kerrigan are two very skilled pass rushers, Pears and Glenn did a fine job against them. Don't know if was Kerrigan that sacked Kolb after being pankacked by Pears, have to watch that play again, though.
I think he's not earning the reps because he's behind in the offense. He has great potential so it will be interesting to see how his situation unveils going forward.