ISLAMABAD Aqeel Khan, Jalil Khan, Imran Shaukat, Munir Ashiq, Tanveer Ashiq, Abid Ali and Sadan-ul-Haq moved to the quarter-finals of the PSO National Clay Court Tennis Championship here at Dilawar Abbas Tennis Complex on Tuesday. Upcoming star Samir Iftikhar outplayed former Davis Cup player Hamidul Haq in a well-contested match. Hamid won the first set at 6-3 and lost the second at 7-5. He was totally exhausted and was unable to play the final set. Meanwhile, third seed Tanvir Ashiq struggled hard to overcome his challenger Ijaz Usman 2-0, as the score-line was 7-5 and 7-5. However, top seed Aqeel Khan and second seed Jalil Khan won their respective matches easily in straight sets. In the boys U-18, Sadan-ul-Haq, Mohammad Abid, Malik Abdul Rahman, Usman Rafiq, Jibran-ul-Haq, Sajid Ali and Heera Ashiq moved to the quarter-finals. Third seed Abdul Rahman Malik won his match against Hassan Tariq in thrilling three sets affairs. In the boys U-14, Mohammad Mudasar, Hamza Asad, Hamza Bin Asif, Imad Amir, Zaid Mujahid, Talal Ilmas, Husnain Manzoor entered the quarter-finals stage by eliminating their respective opponents. Results: Mens singles pre-quarter-finals: Aqeel Khan beat Heera Ashiq 6-2, 6-4, Abdul Rahman beat Sadan-ul-Haq 6-2, 6-2, Imran Shaukat beat Hassan Riaz 6-2, 6-1, Munir Ashiq beat Kamran Khalil 7-5, 7-5, Tanveer Ashiq beat Mohammad Usman Ijaz 7-5, 7-5, Abid Ali Akber beat Saad Zafar 6-4, 6-4, Jalil Khan beat Omer Shahid 6-0, 6-1. Boys U-18 singles pre-quarter finals: Sadanul Haq beat Zaid Mujahid 6-3, 6-3, Mohammad Abid beat Abdul Rahman 6-3, 6-1, Malik A. Rahman beat Hassan Tariq 6-2, 2-6, 6-4, Usman Rafiq beat Nameer Shamsi 6-4, 6-1, Jibran-ul-Haq beat Amanwal Anwar 6-0, 6-0, Sajid Ali beat Kashan-ul-Haq 7-6(3), 6-2, Heera Ashiq beat Saad Zafar 6-1, 6-0. Boys U-14 singles pre-quarter finals: Mohammad Midasir beat Iman Khan 4-1, 4-1, Hamza Asad w/o Fahad Saleem, Hamza Bin Asif beat Talah Bin Asif 4-2, 4-2, Imad Amer beat Nomayl Zahid 4-1, 4-0, Zaid Muhahid beat Afnan Hassan 5-4(4), 4-1,Talal Almas w/o Salman Bin Saleem, Hasanain Manzoor beat Noman Ahmed 4-2 0-4-4-1.