Boxing History, Heavyweights, In The News, Mainstream, Mike Tyson This Day in Boxing March 20, 1988 Tyson KOs Tubbs SteveMarch 20, 2015, 3:33 amMarch 20, 2015 1143 Facebook TwitterThis Day in Boxing March 20, 1988 Mike Tyson KOs Tony Tubbs. Previous ArticleThis Day in Boxing March 19, 1954 Giardello Stops TroyNext ArticleThis Day in Boxing March 21, 1982 Braxton KOs Martin