Pakistan Tennis Federation (PTF) on Monday congratulated Aisam-ul-Haq Qureshi on winning the doubles title of the coveted ATP 500 Series, World Tennis Championships held in Barcelona, Spain.

PTF President Salim Saifullah Khan along with the PTF management committee, in a statement, extended their heartiest congratulations to Aisam.

Aisam, Pakistan's leading tennis player, has won his second doubles title of the year and 13th on the ATP Circuit, pairing with his Romanian partner Florin Mergea.

Explore: Aisam-ul-Haq bags ATP doubles title, credits win to family, friends and country

The pair outclassed Austrian-German duo of Alexander Peya and Philip Petzschner in straight sets with a score of 6-4 and 6-3.

"We are delighted at his latest win," said the PTF president, adding that Aisam "continues to make the nation proud with his achievements."

Aisam and his partner stormed to the final of ATP 500 Series Championships when they outshined former world number one pair, Romanian Horia Tecau and Dutch Julien Roject, after a thrilling 6-3, 5-7 and 14-12 encounter.

The Dutch-Romanian pair saved five match points before conceding 12-14 in the final tie-break.

In the quarterfinals, Aisam and Mergea surprised everyone when they beat the world number one pair of Henri Kontinen of Finland and John Peers of Australia.

Salim said Aisam is a real asset for tennis in Pakistan who has not only raised the country's flag at an international level but also led Pakistan's Davis Cup team to Asia Oceania Davis Cup group two finals this year.

“We hope he would carry his good form in the upcoming tie against Thailand in September," said Salim.