ISLAMABAD The PSO National Ranking Tennis Championship will be held from August 2 to 6 at Dilawar Abbas Tennis Complex, Garden Avenue, Islamabad. According to an official of Pakistan Tennis Federation (PTF), the tournament will be held under the banner of Pakistan Tennis Federation and sponsored by Pakistan State Oil. Mens singles, mens doubles, ladies singles, boys under 18 singles and boys under 14 singles disciplines will be competed during the five-day event.