NEW DELHI, OCT 14: All the top four seeds today entered the boys under-16 semifinals at the DSCL National Hardcourt Tennis Championship.Leading the way was top seed Amanjot Singh of Chandigarh who ousted unseeded Gauryl Fernandes of Maharashtra 6-2, 6-2. Joining him was second-seeded Jaco T Mathew of Tamil Nadu who moved past eighth-seeded AR Anandkumar (AP) 6-2, 6-3.Amanjot now clashes with third-seeded Rohan Gajjar (Mah) in the last four stage while Mathew runs into fourth-seeded Pratim Parekh of Maharashtra.Rohan today beat state-mate Vikrant Sane 6-2, 6-2. However, Pratim was a lucky winner as his opponent, Harshit Sharma of West Bengal, conceded the match due to cramps even after he had won the first set and was in a comfortable position in the second. Harshit lost 7-5, 5-5 (conceded).In the girls under-14 top seed Isha Lakhani of Maharashtra was upset by unseeded Priyanaka Parekh of West Bengal.Results (QF)Boys under-16: 1-Amanjot Singh bt Gavryl Fernandes 6-2 6-2; 3-RohanGajjar bt Vikrant Sane 6-2 6-2; 2-Jaco T Mathew bt 8-AR Anandakumar 6-2 6-3; 4-Pratim Parekh bt 5-Harshit Sharma 5-7 5-5 (conceded).Boys under-14: 1-A Arunprakash bt 8-Tushar Liberhan 6-1 6-1; 3-V Vignesh bt 7-Saurabh Kohli 6-1 6-4; 6-Vikramaditya Menon bt 4-Chatwinder Singh 2-6 6-4 6-2; 2-Vikrant Sane bt 5-Karan Rastogi 6-1 6-0.Girls under-16: 1-Megha Vakaria bt 5-Sania Mirza 6-4, 6-7 (3), 7-5 6-Samrita Sekar bt 3-Isha Lakhani 6-4, 4-6, 6-4; 4-Liza Pereira bt 8-Priyanka Parekh 6-4 7-5; 7-Preeti Rao bt 2-Nandita Chandrasekar 3-6 6-3 6-4.Girls under-14: Priyanka Parekh bt 1-Isha Lakhani 7-5 6-0; 6-Sasha Abraham bt 3-Lata Assudani 6-2 6-3; 4-Ankita Bhambri bt 7-Sandra Sasidharan 6-7 6-3 6-3; 2-Sania Mirza bt 5-Sanaa Bhambri 6-1 6-0.