Reyes is an elite talent, possessing the potential for two 70 pitches and the frame to handle the rigors of being a starting pitcher. That gives him an extremely high ceiling, but his lack of fastball command makes the gap between present and future ability still quite large. The curveball is currently far ahead of the fastball in terms of in-game utility, and he leans on the pitch when he struggles to throw the fastball for strikes. His mechanics aren't the issue, as he has the ability to repeat his delivery when he remains under control. His biggest present issue is a strong tendency to overthrow. Simply put, Reyes likes throwing hard and adds effort to his delivery in order to do so. That effort is unnecessary, as he generates plenty of velocity without it, and it throws off his mechanics and release point. This tendency is not nearly as evident when he throws his curveball.

The command of his fastball will ultimately determine what kind of starter he can become, or whether or not he can remain one at all. If he can't, he should have no trouble becoming a dominant two-pitch late-inning reliever. If he can gain even average fastball command, he will be able to remain in a big league rotation and if enough progress is made, he could lead one. Even without the development of a third pitch, two plus offerings should be enough to remain a starter. The fastball command will have to improve, however, in order for him to avoid a fate as a reliever.