Asitha Fernando finished with a career-best 6-51 as Sri Lanka thrashed hosts Bangladesh by 10 wickets in the second Test on Friday to win the series 1-0.
The visitors bowled out Bangladesh for 169 runs in their second innings with the 24-year-old playing a starring role at Dhaka's Sher-e-Bangla National Cricket Stadium.
"We knew we needed a couple of wickets to go our way," said Sri Lanka skipper Dimuth Karunaratne. "The fast bowlers did the job for us, both in the first innings as well as the second."
Sri Lanka made 506 runs in the first innings after bowling out Bangladesh for 365.
Oshada Fernando sealed the devastating win with an unbeaten 21 in three overs.
Play had resumed on the fifth and final day with the hosts at a precarious 34-4 and Sri Lanka upped the pressure when Kasun Rajitha bowled Mushfiqur Rahim for 23 in the eighth over.
Shakib Al Hasan and Liton Das both hit fifties in a 110-run stand and held on through the first session with a mix of caution and aggression, before Asitha drove the hosts' collapse after lunch.
He took the scalps of both Liton and Shakib soon after the break, claiming four of the last five wickets after dispatching openers Mahmudul Hasan Joy and Tamim Iqbal the previous day. Ramesh Mendis trapped Mosaddek Hossain for nine before Asitha wrapped up the Bangladesh innings with the wickets of Taijul Islam and Khaled Ahmed in successive deliveries.
