Sri-Lanka beat Pakistan by 64 runs in the first T-20 of three match series against Pakistan in Lahore.
Pakistan won the toss and elected to field first.
Sri-Lanka set a victory target for Pakistan 166 runs for the loss of 5 wickets in allotted overs.
In reply, Pakistan were all out 101 runs in 17.4 overs.
Fast bowler Mohammad Hasnain created a new world record and became the youngest bowler to pick up Hat-Trick in T20 international cricket.