Boxer Shiva Thapa won a silver medal at the Asian Boxing Championships in Uzbekistan on Saturday, becoming the first Indian to claim three back-to-back medals at the event. Shiva lost the 60 kg final to second seed Elnur Abduraimov, after defeating Olympic medalist Otgondalai Dorjnyambuu in the semi-final on Friday. With the win, Shiva has qualified for the World Championships.