Dhaka: New-look Sri Lanka trounced Bangladesh by six wickets in the third and final one-day international in Dhaka on Saturday to sweep the series 3-0.

Seamer Dhammika Prasad claimed three wickets in his first match of the series as the tourists restricted Bangladesh to 240-8 after electing to field in the day-night match.

Kusal Perera, a 23-year-old left-handed opener, then hit a maiden one-day century as Sri Lanka surpassed the target with 15 deliveries to spare at the Sher-e-Bangla stadium.