It's a game of "attacking the weakest link." A game of match ups. (not a new concept.) If you think your running game is superior to their run stopping, you attack it. If you know there is a weakness at line backer covering your macho TE, you attack there. If you see a weakness at cornerback and you have a top 5 stud receiver opposing that CB, that's where you go. To add confusion, i.e. keep the D off balance, you simply attack all the weak spots the D has when the opportunity arises. So the weakest link on your offense, or your defense is what you have to improve upon or face a long painful game day.
On D, Nolan Carroll is the weakest link in our secondary, IMO, right now followed by linebackers in general who have trouble covering opposing teams' TEs.
RT's weakness is taking sacks, not avoiding them, not getting rid of the ball. The O-line is inconsistent.
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It's makes good sense to compliment the supporting cast. No player is as successful without solid help from his teammates. Everybody has to hold up their end. Yep, one "Gomer Pyle" can ruin things pretty easily.