Image 17 Boxing Credit: U.S. Marine Corps photo/Wayne Short; editing by Shawnc Boxing is a sport where two participants of similar weight attack each other with their fists in a series of one to three-minute intervals called "rounds". Modern boxing began in 1867 with the Marquess of Queensberry rules. Currently, there are two distinct branches of boxing: Professional and Olympic, which have different rules, but are similar in execution. More selected pictures