I've seen every snap from Cassel in '10 and will do the same in '11.
He wasn't terribly great for the first 4 weeks or so. He lit it up in a blow out loss. Even then, he played very conservatively from then on -- but always mistake free (unlike Sanchez). If he has the lead? He's fine. If he's playing from behind, like yesterday? He's really not going to do to make plays to get back in it.
Before his INT yesterday, he had a TD pass, 80-something yards and his QB rating was at something like 92.1. Good right? Well, he was barely doing anything. If it's 3rd and 7, he'd dump to his RB for 4 yards. That's his game. Sort of like a microcosm of his 2010 season. Nice, conservative stats....but not much in the way of actually great play.
Still has poor pocket presence, and locks on way too much.
BTW - I'm on Chiefs Planet. The hate he gets is unfair. Those fans are misanthropic to the core. But as a huge Cassel "homer" who'll give him the benefit of the doubt, I'm beginning to lower my expectations.