Actually there are. Pittsburgh has a very similar (though not perfect comp) situation with Glasnow and aren't calling him up. And Glasnow is also a year older and has many fewer innings this year. I don't think the Twins are a unique outlier, there would have been more of a split than you are allowing here. I still would have called him up. EDIT: And I forgot Blake Snell with the Rays, which is even a better comp than Glasnow. Another guy who is a year older and has less innings and isn't coming up to a team that could use him. So, to recap, 4 teams had pitchers in a similar spot as Berrios and 3 didn't call them up, including the Rays and Pirates, two of the most respected organizations in the game. The one that did was the Yankees with Servino, a franchise in a different stratosphere as these three. Let's not pretend that Ryan is crazy here. I still would have called him up.