West Indies beat Sri Lanka by 25 runs in the first T20I played at Pallekele to take a 1-0 lead in the two-match series.
Lendl Simmons slammed 67 off 51 deliveries while quick-fire knocks from Andre Russell and Kieron Pollard took them to 196/4 in 20 overs.
In reply, Kusal Perera hits 12th T20I fifty but Oshane Thomas scalped a five-wicket haul to take the visitors over the line.
Sri Lanka: Avishka Fernando, Kusal Perera(w), Kusal Mendis, Shehan Jayasuriya, Angelo Mathews, Dasun Shanaka, Thisara Perera, Wanindu Hasaranga, Isuru Udana, Lasith Malinga(c), Lakshan Sandakan
West Indies: Lendl Simmons, Brandon King, Shimron Hetmyer, Nicholas Pooran(w), Kieron Pollard(c), Rovman Powell, Andre Russell, Fabian Allen, Dwayne Bravo, Oshane Thomas, Sheldon Cottrell