University calendars, including graduations, are planned out 10 years in advance. I doubt that's true of baseball schedules.j
I love graduations; my oldest son graduated in 2020, too, so it was cancelled. I don't really feel like senior days in sports are a celebration of the academics (after all, fall and winter sports don't have them at graduation-time), so I would say having a family/friends party in honor of graduation makes the most sense. You can easily buy a cheap cap and gown and take pictures, even go back to campus for that.