Maryland Statutes
Subtitle 3 - Boxing, Kick Boxing, Wrestling, and Mixed Martial Arts
Section 4-303 - License Required

(a)    A person may not participate as a wrestler or contestant in a contest in the State unless the person has an appropriate license.
    (b)    A person may not act as a manager, referee, judge, second, matchmaker, or promoter in a contest in the State unless the person has an appropriate license.