Vinesh put up an impressive show before going down in the final, while Narsingh was lucky to have reached the bronze medal play-off despite losing in the qualification round initially.
On her way to the final, Vinesh comfortably beat Tatyana Amanzhol-Bakatyuk of Kazakhstan in the semifinals after getting the better of Mongolia's Tsogtbaatar Byambazaya in quarterfinals 8-0.
In the final bout, however, Vinesh could not overcome the challenge from her Japanese opponent, who proved to be too strong for the Indian girl. Vinesh lost 2-3 in the end.
During his repachage bout, Narsingh defeated Byungmin Kong of Korea 15-4 to enter the bronze-medal play-off. He then bagged 3-1 classification points to outplay Zhiger Zakirov of Kazakhstan and clinched the bronze medal.
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In Men's 70kg category, Parveen Rana missed out on a third-place finish as he went down fighting to Takafumi Kojima of Japan in the bronze medal play-off.
En-route to the semis, however, Rana did well to beat Tat Du Can of Vietnam 12-2 in his quarterfinal bout after clearing the qualification round against Sri Lanka's Shanaka Madushanka Ranwalage by fall, 2-0.
Meanwhile, other Indians in the fray today -- Sonu and Khatri Mausum -- failed to make it to the medal round.
In Men's 61kg category, Sonu was defeated by Masakazu Kamoi of Japan 5-1 in the qualification round itself, while Japan's Takeshi Yamaguchi defeated Khatri Mausam 10-6 in the quarterfinals of 97kg category.