D.C. Mun. Regs. tit. 19, § 2314
2314.1 The referee shall inspect the bandages and the gloves of each contestant to ensure that no grease or other foreign substance has been illegally applied thereto.
2314.2 The referee shall ensure that each contestant is wearing a protective cup and mouthpiece.
SOURCE: Final Rulemaking at 35 DCR 3759, 3764 (May 20, 1988).