Tin Yan fought back nerves to subdue a fighting local girl Aryaa Ogale 3-2 in a hard-fought quarter-final match, while her compatriot Sin Yuk quickly disposed of Delhi's Megha Bhatia, the joint third-fourth seed, in straight games in another quarter-final tie at at the NSCI courts here.
Tin Yan wrapped up the game 9-11 11-6 9-11 11-4 11-8 against Aryaa in 43 minutes, while compatriot Sin Yuk carved out a facile 11-6, 11-7, 11-0 win in just 20 minutes over Megha.
The top two seeds in the boys' under-15 category, Yash Fadte of Goa and Neel Joshi of Maharashtra, also progressed to the semi-finals.
In quarter-final encounters, top seed Yash tamed Sankalp Anand of Delhi 11-8 11-8 11-6, while second seed Joshi sidelined Chandigarh's Shivamraaj Gulati in four games at 13-11 11-6 3-11 11-8.
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Other results: Boys' U-15 (quarter-finals): Navaneeth Prabhu S (TN) bt Tanay Punjabi (MH) 11-9 9-11 11-4 11-6; Advait Adik (MH) bt Deepak Mandal (MH) 14-12 11-7 11-2;
Girls' U-17 (quarter-finals): 1-Ashita Pranaya Bhengra (TN) bt Sparshi Mattas (GA) 11-4 11-3 11-2; Navmi Sharma (MH) bt Nandika Kumar (UP) 11-5 11-6 11-5; Amita Gondi (TL) bt Simran Nagpal (DL) 11-4 11-5 11-7.
Boys' U-17 (quarter-finals): Tushar Shahani (MH) bt Rutvik Rau (MH) 11-2 11-9 11-9; Utkarsh Baheti (RJ) Chaitanya Shah (MH) 11-8 11-6 11-6; Arman Jindal (MH) bt Aryan Parekh (MH) 8-11 11-8 11-9 11-7; Veer Chotrani (MH) bt Gautam Nagpal (DL) 11-7 11-8 8-11 11-4.