Good luck to Riley. I'm sure that their will be more. Last year thinking that there were 10 or 11.
I will add that I suppose that the baseball coaching staff, like other staffs at UNC, have meetings with players and it is discussed what the staff sees as the future of a particular player is, as well as where the player sees his future at UNC is heading. Probably not every player who didn't see much time on the field/mound is asked to look elsewhere, and not every player who did see the field would want to stay. And then again there are those guys who have a love for Chapel Hill that help them to decide to stay around. I know one of them.