This Day in Boxing Joe Louis “Brown Bomber” KOs Jack Roper In One This Day April 17, 1939 Heavyweight Title SteveApril 17, 2020, 7:55 pmApril 17, 2020 259 Facebook Twitter Joe Louis “Brown Bomber” KOs Jack Roper In One This Day April 17, 1939 Heavyweight Title Joe Louis 201¼ Jack Roper 204¾ Los Angeles KO 1 time: 2:20 referee: George Blake Heavyweight Title Previous Article“Sugar Ray” Robinson One Punch KO Rocky Graziano This Day April 16, 1952 Middleweight TitleNext ArticleDeontay Wilder KOs Audley Harrison in One Round This Day in Boxing April 27, 2013