Why? Is there data to suggest that this has to happen? The fact is, the opposite is true, it's actually more rare that once a player is called up, he's up for good. And no one is suggesting that Meyer is merely putting up unreplicable fantasy stats- just that every expert concurs that he has elite stuff and a high ceiling. Randy Johnson didn't put it all together until he was 28.....he learned on the job at the major league level through his mid-20s before finally becoming a "pitcher". Meyer appears to be on a faster track, with similar stuff. You ask, "could he come up and struggle, sure." I ask, "could he come up and be a key part of the rotation, sure." His performance against Pawtucket supports my case. When a guy is demonstrating that he is one of the best franchise options, you let the colt out of the barn and see what he's got. The Cards and Rays included. If he needs some fine tuning back in Rochester, so be it, but I think he's demonstrating that he's a good enough athlete to make improvements while on the job at the major league level- and it doesn't cost anything to find out.