D.C. Mun. Regs. tit. 19, § 2411
2411.1 Except as provided for in § 2411.3, each non-championship mixed martial arts contest shall be three (3) rounds, of five (5) minutes duration, with a one (1)-minute rest period between each round.
2411.2 Except as provided for in § 2411.3, each championship mixed martial arts contest shall be five (5) rounds, of five (5) minutes duration, with a one (1)-minute rest period between each round.
2411.3 The number and duration of rounds for any mixed martial arts contest may be modified upon approval by the Commission.
SOURCE: Final Rulemaking published at 54 DCR 7224 (July 27, 2007); as amended by Final Rulemaking published at 66 DCR 6627 (May 31, 2019).