KG's calf may be a little sore still, but good enough that he can play on it, his minutes are reduced as well, he only played 19 minutes the other night.
Its clear he isnt mentally ready to "go hard" right now, which is understandable, he probably figures he injured it by "going hard all season until he got injured"
So I expect him to be more concered about his health and try not to overwork himself until the playoffs come around.