I am in no way a "fan" of LT, as a life long Raiders fan, I hate him. However, he has had how many different coaches since becoming a Pro? Mike Riley, Marty, and now Turner, how does that make him a system back? You mean because he is good in every system he plays in? I agree if that is the case. When you say "system back" I think any Denver RB, any Indy RB, hmmm to me thats about it, those systems have been in place for so long they have been proven to produce numbers no matter who is running the ball. I think the Keith comparison and at least 3-4 of the Denver backs over the years have all proven they can only strive in that system, that makes them a "system back".