unattached could mean different things, or at least it used to be. In an invitational tourny the unattached are usually the jv filling in a bracket, but don't score team points, as only the varsity wrestler, earns team points. It could also be a red shirt. A red shirt can still practice with the team, and can still wrestle in open tournament. They just have to wear their own singlet, (not a team singlet) and can not travel with or use team supplied uniforms, or food, or rooms. Basically they are on their own or unattached. (supposedly).