India, July 10 -- LUCKNOW Sarthak Yadav won the boys' under-17 singles final at the District Badminton Tournament, defeating Arnav Mehrotra in a pulsating three-game contest 15-8, 16-14, and 15-12 here on Thursday. In under-15 girls' singles, rising talent Janya Srivastava defeated Vrisha Yadav 15-9, 15-6, controlling rallies with crisp court coverage and decisive net play. Janya's day got even better in doubles, where she teamed with Mansha Rai to clinch the under-15 girls' doubles crown. The pair downed siblings Aditi and Bhumi Pandey 15-9, 15-4, blending aggressive smashes with steady defence to wrap up the trophy....