KM is where he belongs, if he was doing what he needed to in practice he would have earned playing time.
Look at Holliday, the kid does it on ST's they gave him some offensive plays in practice, he must have executed it there so they put it during the game and he executes them in game. I would bet we see him get a few more plays next week.
Meanwhile KM continues to be inactive every week. If he ever got activated it would be due to injury.
I am kinda surprised Ball didn't get a few late carries.