(CNN) -- Sanath Jayasuriya and Tillekeratne Dilshan's century opening stand powered Sri Lanka to a 15-run win over West Indies in their World Twenty20 match at Trent Bridge on Wednesday.
Jayasuriya hammered 81 off just 47 balls as Sri Lanka finish Group C with two wins out of two.
In the absence of their injured captain Chris Gayle, the Windies were unable to match the tempo of Sri Lanka's 192 for five -- despite a swift half-century from Dwayne Bravo.
Sri Lanka therefore concluded their Group C campaign with two wins from two, while the Windies must regroup in time to face India in their first Super Eights match on Friday.
Jayasuriya (81) enjoyed most of the strike and made his fellow-Indian Premier League star Dilshan (74) look almost pedestrian as he hit 10 fours and three sixes from only 47 balls, after Sri Lanka had been put in.
The most notable victims of the openers' onslaught were Fidel Edwards and Kieron Pollard, who conceded 82 runs in five wicketless overs.
Jayasuriya was eventually out lbw, attempting a reverse-sweep at Lendl Simmons (who took four for 19).
Simmons' medium-pace proved successful -- as well as seeing off Jayasuriya and Dilshan to reverse-sweeps, he also accounted for Kumar Sangakkara and Mahela Jayawardene.
The West Indies' reply was minus Andre Fletcher when Lasith Malinga bowled him with a high full toss in the fourth over.
But Simmons was largely responsible for a near nine-an-over rate until his was the first of three wickets to fall for only four runs in seven balls, to the spin of Ajantha Mendis and Muttiah Muralitharan.
From 73 for four in the eighth over, Dwayne Bravo (51) and Ramnaresh Sarwan were up against it on a pitch helping the spinners.
Despite a stand of 77, which more than doubled their score in 10 overs as rain began to fall, they never seriously threatened the target set.
India beat Ireland by eight wickets Wednesday in the Twenty20 World Cup at Trent Bridge:
In a later Group A match, defending champions India made sure they would top the section with an eight-wicket win over Ireland at Trent Bridge.
Both teams have already qualified for the Super 8 phase, but it was an efficient performance by India who restricted their opposition to 112-8 in 18 overs in a rain-shortened match.
Andrew White top scored with 29 as Zaheer Khan led the bowlers with four wickets for 19 runs.
Rohit Sharma with an undefeated 52 and Gautam Gambhir with 37 saw India home in the 16th over.