NEW DELHI, May 12: On a day of upsets, fifth seed Tushar Lebrehan from Chandiharh overcame a first set deficit and camefrom behind to edge out top seed D. Rohit Raju of Delhi in the boys under-14 quarter-finals of the Adidas Junior Circuit tennis tournament.In the boys under -16 quarters, fifth seed Dhrub Kumar (Bangalore) humbled third seed Delhi boy Nipun Gupta, sixth seed Vivek Bakuni of Delhi beat fourth seed Chatwinder Singh of Chandigarh.In the girls under-16 section, the top four seeds sailed through to the semi-finals. However, in the under-14 category, fifth seed Naina Karsolia from UP beat fourth seed Anuja Parikh of Maharashtra.ResultsBoysUnder-16 (quarterfinals): 1-CS Mohanty (Delhi) bt Saurabh Singh (Chand) 6-3, 6-4; 6-Vivek Bakhuni (Del) bt 4-Chatwinder Singh (Chand) 3-6, 6-1, 6-4, 5-Dhrub Kumar (Bang) bt Nipun Gupta (Del) 6-3, 3-6, 6-4; 2-Amanjot Singh (Chand) bt Anil Goswami (Del) 6-2, 6-1.Under-14: 5-Tushar Lebrehan (Chand) bt 1-D. Rohit K Raju (Del) 3-6, 6-0, 7-5; 7-Rahul Varma (Del) bt Siddharth Gulati (Del) 6-1, 6-4; 3-Tushar Garg (Del) bt 6-Gurmeet Singh (Chand) 6-2, 6-4; 2-Wrik Ganguly (Del) bt 8-Ankit Raj (Chand) 7-6 (7-3), 6-4).GirlsUnder 16 quarter-finals: 1-Sania Mirza (AP) bt 8-Monika Goel 6-1, 6-0; 3-Sanna Bhambri (Del) bt 6-Vishika Chetri 6-2, 6-1; 4-Rani Smita Jain bt Naina Karsolia (UP) 6-0, 6-1; 2-Ankita Bhambri (Del) 6-Anuja Parikh (Mah) 6-3, 6-0.Under-14: 1-Sania Mirza (AP) bt 6-Neha Singh (Chand) 6-1, 6-0; 3-Sanaa Bhambri (Del) bt 7-Geetanjali Sharma (Pun) 6-1, 6-0; 6-Naina Karsolia (UP) bt 4-Anuja Parikh (Mah) 4-6, 7-6 (7-4), 6-3; 2-Ankita Bhambri (Del) bt 8-Satvika Saboo (Chand) 6-0, 6-2.