With a release I believe all sports except men's basketball and football can play when the athlete becomes a student at a new university.There are some exceptions as some conferences enforce additional restrictions if athletes competed against a school they want to transfer to.This it's really restrictive in sports like golf where tournaments often have 12-18 teams so you may compete against half the NCAA teams.This also can be waived though.Also transfers in football from FBS to FCS can play when becoming a student.Basically it used to be revenue vs non revenue sports.If baseball hasn't been effected yet I expect it to in the future as crowds and revenue grows.