Niroshan Dickwella top-scored with 95 and spin bowler Akila Dananjaya took four wickets to lead Sri Lanka to a confidence-boosting 219-run win on the Duckworth/Lewis method in the fifth and final one-day international against England on Tuesday.
England won the five-match series 3-1, with the first match ending without a result due to rain.
Sri Lanka captain Dinesh Chandimal won the toss and elected to bat first and his batsmen justified his decision by scoring 366-6 in 50 overs. In reply, England was 132-9 in 26.1 overs when heavy rain interrupted play.
Sri Lanka had kept England well below the Duckworth/Lewis par score at the stoppage.
Eralier, Opener Niroshan Dickwella blasted 95 and skipper Dinesh Chandimal 80 as Sri Lanka posted 366 for six in their fifth one day international against England on Tuesday.
Dickwella put on 137 runs with opening partner Sadeera Samarawickrama, who made 54.
The left-handed Dickwella hit 12 fours during his 97-ball stay before falling to off-spinner Moeen Ali, who took two wickets in the innings.
Chandimal then build partnerships including a 101-run third wicket stand with Kusal Mendis, who smashed 56.