Sri Lanka captain Mahela Jayawardene elected to bat after winning the toss against Pakistan in the second one-day international in Pallekele on Saturday.
The tourists lead 1-0 in the five-match series following their six-wicket win in the opening one-dayer on Thursday.
Pakistan made one change as they brought in debutant paceman Rahat Ali in place of injured Mohammad Sami, while Sri Lanka retained the side.
Sri Lanka: Mahela Jayawardene (capt), Tillakaratne Dilshan, Upul Tharanga, Kumar Sangakkara, Dinesh Chandimal, Angelo Mathews, Lahiru Thirimanne, Thisara Perera, Nuwan Kulasekara, Lasith Malinga, Rangana Herath.
Pakistan: Misbah-ul-Haq (capt), Mohammad Hafeez, Azhar Ali, Younis Khan, Umar Akmal, Shahid Afridi, Sarfraz Ahmed, Umar Gul, Saeed Ajmal, Sohail Tanvir, Rahat Ali.
Umpires: Ruchira Palliyaguruge (SRI) and Paul Reiffel (AUS)
TV umpire: Ranmore Martinesz (SRI)
Match referee: Chris Broad (ENG)
Sri Lanka elect to bat, 280/4 after 50 overs
