After winning the toss and opting to field, the hosts produced a disciplined bowling performance to restrict Sri Lanka to 169 all out in 20 overs.
Sri Lanka showed resistance through Dunith Wellalage, who scored a brisk 43 off 28 balls, and Kamil Mishara, who added 28 runs. However, consistent pressure from the West Indies attack prevented the visitors from building strong partnerships.
Shamar Joseph was the standout performer with the ball, claiming 5 for 33 and dismantling Sri Lanka’s middle and lower order to wrap up the innings on the final delivery of the 20th over.
In response, the West Indies chase was tested early by Sri Lanka’s bowlers, with Wanindu Hasaranga impressing with figures of 2 for 17.
Despite the early setbacks, Sherfane Rutherford anchored the innings with a vital 54 off 40 balls, while captain Rovman Powell (33) and Shimron Hetmyer (32) provided key support.
The match went down to the wire before the West Indies reached 170 for 5 with just two balls remaining, sealing both the victory and the series.