Pakistan's tennis star, Aisam ul Haq has achieved his career best ranking of No 8 on ATP World Ranking List of Doubles Players. Aisam has bettered his ranking due to his good performance at French Open last week, said the information made available here. He is the No 2 Asian on the list after Mahesh Bhupati. Rohan Bopanna of India is ranked No 10 and Leander Paes of India has gone down to No 11.