Young fast bowler Matheesha Pathirana has grabbed a career-best 4-32 to lead injury-hit Sri Lanka to a comfortable five-wicket win over Bangladesh in the Asia Cup.
Pathirana consistently challenged the batters with his deceptive pace while spinners Dhananjaya de Silva and Dunith Wellalage dried up the runs in the middle overs on Thursday as Bangladesh were bowled out for 164 in 42.4 overs.
Charith Asalanka (62 not out) and Sadeera Samarawickrama (54) then hit half centuries and carried Sri Lanka to 5-168 with 11 overs to spare despite the top order hobbling against Bangladesh's pace and the leftarm spin of captain Shakib Al Hasan, who took 2-29.
Sri Lanka stuttered at 3-43 within the first 10 overs when fast bowler Taskin Ahmed had Dimuth Karunaratne clean bowled cheaply and Al Hasan rattled the stumps of Kusal Mendis.
But Asalanka and Samarawickrama rebuilt the chase with a 78-run stand before Mahedi Hasan had the latter stumped.
Al Hasan then bowled Dhananjaya de Silva's with a full pitched delivery before Asalanka ensured Sri Lanka got home with plenty of overs to spare.
It was a remarkable show by Sri Lanka's second-string attack after injuries to multiple frontline bowlers ahead of the tournament, including ace legspinner Wanindu Hasaranga.
Al Hasan's decision to bat first under overcast conditions didn't go well.
Offspinner Maheesh Theekshana struck off his second ball when he had Tanzid Hasan leg before without scoring.
De Silva had Mohammad Naim (16) caught at point off a leading edge and Pathirana's pace was too much for Al Hasan (5) who gloved a low catch to wicketkeeper Pathum Nissanka.
Najmul Hossain Shanto top-scored with 89 off 122 balls but never looked to threaten the pace and spin on a tricky wicket.
Bangladesh's most experienced player Mushfiqur Rahim (13) was one of the four batters to reach double-figures before he fell in Pathirana's return spell as he failed to clear the third man fielder with his uppercut.
Pathirana then made short work of the tailenders by claiming two more quick wickets as Bangladesh folded for a well below-par total.
Afghanistan are the other team in Group B, with the top two advancing to the Super 4.
Pakistan inflicted a crushing 238-run defeat on newcomers Nepal in the opening Group A game on Wednesday and will take on arch rivals India in their next group game on Saturday.