Actually, I've been impressed with the way Doc is handling Sam the last few games. Gives him a chance, then when he sucks yet again, gives him a quick hook.
Doc's patience with Ray is paying off(I would have cut his minutes severely, shows what I know), and I really don't mind him playing Sam for a few minutes each game just to see if he can get something going. Difference between Sam and Ray though is about six years, so Sam may just be too old.