I've watched every down of his NFL career, and been horribly disappointed in what I witnessed.
Curry is a classic case of having incredible measurables (height, weight, speed, strength), but lacking of any significant football sense. He was consistently out of position. He consistently missed tackles. He was an overall detriment to the Seattle defense. The only thing I thought he did well was hold the point of attack when running plays came to his side. I guess that's a size/strength ability more than anything else.
I lost count of the number of times I watched a ball carrier bounce off of him as he tried to put a giant hit on a player. He seldom wrapped up.
I lost count of the number of times that he allowed a TE to make him look silly in coverage. Vernon Davis will miss him a lot.
I lost count of the number of times that he completely over-ran plays allowing giant cutback lanes.
Final thought, and I don't want this to come off as a slam against the man. I think Aaron Curry is a good man. I would love to have him as a friend and/or neighbor and I hope he finds a role with Oakland that suits his skill set well. To say he's a devote Christian is an understatement. If you take a look at his twitter account you'll get a better understanding of what I'm referring to.
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Is it possible for a man's religion to interfere with his profession as a football player? If it is, Curry is certainly toeing that line.