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  Dusmatov, 23, was awarded a unanimous points victory - two judges scoring the fight 30-27, and one 29-28.
  Martinez, 24, is the first Olympic boxing finalist from Colombia.
  The United States' Nico Hernandez, 20, and 19-year-old Cuban world champion Joahnys Argilagos took bronze after losing in the semi-finals.
  Find out how to get into boxing with our special guide.
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