Pakistan won the toss and elected to bat in the fourth day-night international at Sharjah stadium here on Sunday. Pakistan, who lead the series 2-1, made two changes from the line-up which won the second match by 21 runs in Dubai on Friday, bringing in paceman Aizaz Cheema and allrounder Shoaib Malik in place of Sohail Tanvir and Abdul Razzaq. Sri Lanka made no change from the second match. Pakistan won the first match by eight wickets, while Sri Lanka levelled the series at 1-1 by winning the second by 25 runs -- both played in Dubai. Pakistan: Misbah-ul Haq (capt), Mohammad Hafeez, Imran Farhat, Younis Khan, Umar Akmal, Shoaib Malik, Shahid Afridi, Sarfraz Ahmed, Aizaz Cheema, Umar Gul, Saeed Ajmal Sri Lanka: Tillakaratne Dislahn (capt), Upul Tharanga, Kumar Sangakkara, Mahela Jayawardene, Dinesh Chandimal, Angelo Mathews, Jeevan Mendis, Sekkugge Prasanna, Dilhara Fernando, Lasith Malinga, Thissara Perera Umpires: Richard Illingworth (ENG) and Zameer Haider (PAK) Tv umpire: Marias Erasmus (RSA) Match referee: Andy Pycroft (ZIM)