Marquess of Queensberry Rules
The Marquess of Queensberry Rules were the accepted rules of boxing.
In 2369, Q challenged Benjamin Sisko to a boxing match under these rules. (DS9: "Q-Less")
In 2375, a vision of Boothby accused Chakotay of not fighting by these rules when he ordered Thompson, Sharr, MacAlister, and Tuvok to set their phasers to kill. (VOY: "The Fight")