Earlier, after Sri Lanka won the toss and elected to bat first, Jayasuriya welcomed speedster Shoaib Akhtar in the 13th over of the innings with a six over mid-wicket and a four over square leg.
Jayasuriya was fortunate to score his 57th limited-overs half century after Pakistan captain Inzamam-ul-Haq dropped a two-handed, head high catch at short mid-wicket when he was batting on 38.
Jayasuriya struggled with cramps soon after completing his half century and found himself run out by Malik.
Marvan Atapattu followed soon after when he lobbed a gentle shot straight to Inzamam.
Pakistan went into the match with a full-strength side after beating Zimbabwe in the previous two games of the triangular series. Fast bowler Akhtar and all-rounder Abdul Razzaq returned after being rested for the second game against Zimbabwe last Sunday at Peshawar.
Wicketkeeper Moin Khan didn't recover from an illness and Younis Khan -- as in Peshawar -- was his replacement behind the stumps. Captain Inzamam also recovered from a groin injury.
RSS