Amazing post. Illustrates the chess game that is the position. I love the "66% success%" you give him, interesting concept. For a guy of his status you'd hope to see that get a little closer to 90%. At least I'd like to see around 80% in his second year.
Two things that strike me
1) Even in Man with zone under, he seems to not have the greatest concept of the under protection and relies on it. The dig play, it looks like he though he was protected on the dig route by Carter.
2) VERY risk averse it seems. He is approaching the game as though he refuses to give up the big play. I really think this is probably coaching; that fits into the kiffin concept, even in man. I think you will rarely see them ask Claiborne to use trail technique even in straight man coverage. Not sure if they just don't trust him or the coaching staff doesn't believe in it.
I apologize in advance for any confusion.
I was hesitant to include success rate just because I haven't made any other similar posts with that kind of grading scale, so there's nothing really to reference it with.
Overall 66% is actually pretty decent game. Take for instance, our game against the Jets in early 2011... Revis had a success rate of about 67.5%, and everyone remembers how well he did (albeit against a hobbled Bryant).
Just for reference sake
81% and over = A+
76%-- 80%= A
71%-- 75%= A-
66%--70%= B+
But from there the scale kind of breaks down because a guy with 50% success rate is not really a C- effort. So that's also not a perfect example.
Also, it doesn't really take into consideration the different tasks each CB is asked to do, like difficulty of opponent, lack of help, situation, etc etc. It also doesn't place any special weight on how many 'shut downs' I assign, which is ultimately considered a success when creating a percentage of bad snaps to good ones.
So while Revis had a pretty similar success rate in that game, he was still far more impressive
But overall, a good rule of thumb is, if you're successful on 70% of your snaps or more over the course of the season you're a top 10 kind of guy. 75% and above, and you're elite.
For reference sake, last year, Sherman was successful on about 83% of snaps.
But even that's not perfect as Revis is a low 60% kind of guy and it's still pretty evident that he's the best corner in the league.
Again, sorry for muddling what is supposed to be a decent grading system.
EDIT: I'm working on putting together a better grading system to accompany the success rate.