Joe Louis 5th First Round Knockout On this day, in 1946 Joe Louis fought challenger Tami Mauriello who had already been heavyweight champion of the world for over nine years, he knocked him out in the first round. September 18, 1946 Sport: Boxing Trivia What Are the Five Events That Make Up the Modern Olympic Pentathon? Which Nations Won the Gold, Silver and Bronze Medals the Last Time Baseball Was an Olympic Sport? sports in this article Boxing tags in this article Fan On This Day SportsEngine