academic probation

Welcome to the site.  (BTW, my son is also a west coast D2 and is also going east for the summer.)  Your son's coach assigned him to a summer college program and he was being considered to contribute as a freshman so, from a baseball standpoint, he must be reasonably talented.  The issue now is academics.  The coaching staff will want to see clear signs that your son can quickly get on top of his grades so he doesn't have to worry about him from an eligibility standpoint going forward.  

So, in this instance, when he meets with the coach, he needs to assure him this was a one-time thing and it will be the last but more importantly, he needs to execute right out of the gates next semester with good grades.  Also, he needs to find out from coach what his role will be in the meantime and make sure he fulfills any obligations set forth.  Be aware that it may be a difficult period for him.  Players who are not eligible due to injury, grades or other tend to really feel left out, particularly if they are not attending practices regularly.  

Let us know how it goes.  Feel free to PM with school and summer college league in the off chance they are same or rivals.

Often, there are courses offered at this time between semesters.  They are intense two week courses.  I don't know if your son's university has any offerings but you might want to check into it. 

What was his other grades that he did pass? For one class to drop it to a 2.0 sounds like he may have struggled in other classes. What is his major?

Does his coach/school require athletes to attend mandatory study hall? Did son try to get tutoring or try and do things on his own. Have him use services on campus. Does his school have academic advisors that work w athletes?  

Problem is Spring semester will be time consuming w practices/games and players will need to hit books in spite of schedule. 

Unfortunately as parents we want to come to aide of our kids, but he has to be the one that puts in the work or pay the consequences. All we can do is listen and give encouragement. Good luck

Do they redshirt for academic probation?

I agree with the above it just wasn't one class he didn't do well in.

He is going to have to work really hard to get back to where he needs to be, and this may be the best time to get the job done in the classroom as to raise his GPA significantly. Also be aware that he may need to attend summer school.  He needs to get with his academic advisory as soon as he returns.

I am sorry but you should be more concerned with his future as far as academics rather than in baseball.

An athlete on academic probation might redshirt, but it depends upon the policies of a particular college.  At one college, academic probation might make an athlete ineligible for competition, while such an athlete might still be eligible to compete at a different college as long as they are meeting NCAA and conference requirements.  If a non-athlete would not be eligible for any extracurricular activities if on academic probation, then that same standard should be applied to athletes at that college.