Top seed Anant Sitaram, Tejeswar PC and Anand Kumar scored hard-fought wins over their rivals to enter the U-16 boys semi-finals in the AITA mini/sub-junior tennis championship today. Jaico Mathew had a relatively easy 6-3 6-4 win over third seed Rohan Gajjar for the fourth semi-final spot.Results (prefix denotes seeding)Boys (U-14) PQF: 1-R Arun Prakash bt Surya Charan 6-1 6-3, 8-MV Abhay Prakash bt K Arun Karthik 6-3 6-4, R Vasudevan bt 6-Saurabh Kohli 6-4 7-6 (7-4), 3-V Vignesh bt S Kishore 6-3 6-3, Rishi Behl bt 4-Rohit K Raju 6-4 6-3, 7-Karan Rastogi bt M Jaiyakar 6-1 6-3, LS Ananta Bhaskar bt 5-Wrik Ganguly 6-4 6-3; (U-16) QF: 1-Anant Sitaram bt Chatwinder Singh 3-6 6-1 6-3, 5-Jaico Mathew bt 3-Rohan Gajjar 6-3 6-4, 8-Tejeswar Chigaderi bt Amit Chanla 3-6 6-3 6-2, 4-AR Anand Kumar bt 7-K Aravinda Prakash 7-6 (7-3) 6-4.Girls (U-14) PQF: 1-Isha Lakhani bt Akshata N 6-0 6-3, 7-Ashel Dimi bt Divya Vijayakumar 6-1 6-2, 6-Nivedita Venkatesh bt S Paluri 6-1 6-2, 3-Lata Assudani bt Mansi Modi6-0 6-2, 4-Sharanya Pattabi bt M Kamini 6-2 6-3, 5-Sanaa Bhambri bt Iciri Rai 6-0 6-0, 8-Krushmi Chedda bt Anuja Parikh 2-6 6-1 6-4, 2-Sania Mirza bt S Gangothri 6-2 6-3.