Sri Lanka captain Kumar Sangakkara is wary of a Pakistan comeback in the final Test of the series, acknowledging the visitors’ capacity for sharp form turnarounds.

Sri Lanka has an unbeatable 2-0 lead in the three match series, with the final Test starting today at the Singhalese Sports Club ground.

Pakistan will be both trying to recoup some pride with a win, and to gain some momentum heading into the upcoming one-day series.

"Pakistan has always been temperamental as a side," Sangakkara said yesterday. "That’s what the greatest dangers about them. We don’t know what to expect when we walk out on to the field.

"The thought always at the back of our heads is that ‘these guys are such a great side, just watch out, one of these days they are going to come back and come back hard at you."’

"We’ve just got to be ready and if that happens we absorb the pressure."

Pakistan lost the first two Tests after being in winning positions but collapsing dramatically.

"Our mental status is simple," Pakistan captain Younis Khan said. "Everybody wants to win, everybody knows that if we play to our potential we deliver all the time."

Younus said he agreed with Sangakkara’s opinion that Pakistan team is unpredictable and worried about its tendency to collapse.

"It might become our habit. So we must stop these things specially in Test cricket because in one-dayers or Twenty20 it’s managable. But not in Test cricket."

The Test will be the last in the career of 35-year-old Sri Lanka seamer Chaminda Vaas.

Sri Lanka: (From) Kumar Sangakkara (captain), Malinda Warnapura, Tharanga Paranavitana, Mahela Jayawardene, Thilan Samaraweera, Tillakaratne Dilshan, Chaminda Vaas, Anjelo Mathews, Chamara Kapugedera, Ajantha Mendis, Thilan Thushara, Nuwan Kulasekera, Rangana Herath, Kaushal Silva, Suranga Lakmal and Dammika Prasad.