Niemann is not quite ready just yet. I would like to see him have 2 or 3 more starts working on his changeup, and then maybe call him up. As far as Hammel, he will get lit up like a Christmas tree in the starting rotation. His fastball is pretty straight, and if he is not throwing it down in the zone, well can you say welcome Mr. 8.5 ERA. The worse thing is that he is a much better option then Jackson at this time. His confidence is completely blown now, but I think he is still too valuable to just out right cut.