I'm in 7 dynasty leagues with a roster size of 20+ and Walker is rostered in every league. I'm very surprised someone hasn't dropped him yet. I have him in two leagues myself. I guess most owners think the reason he is so terrible is because his head isn't right, and because he plays for Oakland. What most don't want to believe is that his devestating injury has ripped him of his speed. I believe it's a lethal combination of all three. I've almost dropped him a few times, and probably will soon.