So? Plenty of high schoolers start in the Appalachian League. He could've just as easily started there instead of the GCL. It's not a massive jump. Thus, a promo wouldn't be unheard of.
It's most likely some sort of injury though.
Anyone who thinks it's ok for an athlete to be able to do whatever they want away from the field of play is completely out of touch with reality and common sense.
So if Osuna was caught kidnapping little kids, raping them in the back of his van, then dumping their bodies in the local river you'd be ok as long as he got his 35 saves a season for the Jays?
I think part of it is that they don't want to disrupt their established teams that have already been playing full time together for 2 1/2 months. It would be a bit of a slap in the face of the guy that's been playing full time all season.