ISLAMABAD - Top seed Aqeel Khan, Usman Rafiq, Heera Ashiq, Syed Zohair Raza Sanaullah Khan, Shahzad Khan, Ahmed Ch and M Abid entered the 4th Syed Tajammul Abbas Memorial National Ranking Tennis Tournament men's singles quarterfinals here at Senator Dilawar Abbas PTF Tennis Complex Friday. Aqeel Khan beat Hasnain Manzoor in straight sets 6-1, 6-1, Usman Rafiq beat Faizan Khurram 6-4, 6-4. S Zohair Raza beat Hamza Bin Asif 6-7, 6-3, 6-0. Sanaullah Khan beat Ejaz Khan 6-1, 6-3, Ahmed Ch outclassed Shahid Afridi 6-1, 6-3, while Abid defeated Talha Zubair 6-1, 6-4. In the boys U-18 event, Syed Nofil Kaleem, Talha Zubair, M Muzammil, Hamza Bin Asif, Kashanul Haq, Hasnain Manzoor, Arham Atiq and M Mudassar advanced to the quarterfinals. M Muzammil beat Aman Atiq in the well-contested match.