The match is being played at Sabina Park in Kingston.
With the three-match T20I series currently level at 1-1, both teams head into the contest knowing that the winner of this match will clinch the series. The decider promises to be a highly competitive encounter as Sri Lanka and West Indies battle for supremacy in the final game of the series.
Sri Lanka will look to post a challenging total after being asked to bat first, while the hosts will aim to capitalize on the conditions with the ball and secure a series victory in front of their home crowd.