Only an extremely small number of exceptional freshmen jump right into major college ball and have immediate success. Only a handful in the country each year.
A larger number, but still very small, find success in the course of their freshman year.
The largest number of successful college players make their biggest jump in their sophomore year after adjusting to this level through their freshman year, a summer of collegiate wood bat, and a second fall when they have a better idea how to prepare for a season.
It's waaay too early to form negative judgments about any of the freshmen Serrano is playing.
It's not fair to expect anyone to be in the first group. It's not reasonable to expect the team to have more than a couple in the second group. If five or six turn out to be in the third group, we'll end up with pretty good memories of this class.
Patience, please.