Well, he didn't do particularly well in some very important peripherals and many people are blaming it on Kohl's mechanics. If a guy is struggling with mechanics, you don't promote that guy... After all, MiLB is a development league. It's used to, well, develop players. And if a guy is putting up mediocre numbers, you keep him down for another year to allow him to work on the things that will help him succeed at a higher level. If a guy is kicking furiously to keep his head above water, it's hard to work on the smaller things that will help him down the road. He's working as hard as he can just to keep breathing... And when that happens, you relax the pressure on the kid and give him an environment where he has the time and capability to work on those things, the things that really matter in the long run and will dictate his success/failure. Most scouting reports on Stewart said he was going to be a work in progress, I'm not sure why this is so surprising to people. This is what a work in progress looks like and we should be happy it appears he has started to turn the corner and have real, legitimate success, level of competition be damned.