Stanisław Kiecal, better known in the boxing world as Stanley Ketchel, was an American professional boxer who became one of the greatest World Middleweight Champions in history. He was nicknamed "The Michigan Assassin." He was murdered at a ranch in Conway, Missouri, at the age of 24.

Mike "Twin" Sullivan was an American boxer credited with taking the Welterweight Championship of the World on April 23, 1907, when he soundly defeated William "Honey" Mellody in Los Angeles in a twenty-round bout. He vacated the title in the late fall of 1908, when he could not make weight.