In general, I hate using spring training to decide on a prospect. But this goes triple for Montgomery.
Montgomery’s problems last year as far as we know were some combination of a lingering back injury, an inability to hit fastballs, and maybe some personal issues.
In spring training, he won’t be playing every day and on days he does play he may get taken out early. So, if he has a back injury that might flare up when playing everyday, spring training does a poor job of testing it.
Furthermore, in the spring, many pitchers aren’t throwing their hardest because they’re building up their arms. Combine that with guys working on specific things and the occasional A ball pitcher who takes over in the 7th inning, and it’s hard to say anything meaningful about a good performance because fastballs will get tougher in April.
Send him to Charlotte, let him play everyday, let him show me he can handle that pitching and stay healthy, and we can see him in May.
If he can’t, if he can’t catch up with fastballs or his back can’t play everyday, then we will be happy we didn’t start his big league clock. One obvious risk is you call him up and he has an ongoing back problem, you wind up with the situation like Kopech where you burn through a bunch of his control.