Buster Douglas Says Ruiz Beating Anthony Joshua’s One Of Biggest Upsets Ever

         Buster Douglas -- the man who SHOCKED the world and beat&#160;Mike Tyson&#160;-- tells TMZ Sports&#160;...&#160;Andy Ruiz's TKO of Anthony Joshua is one of the biggest upsets in boxing history. Bigger than his 1990 upset of undefeated heavyweight&hellip;</a><br /><br />
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