Nasir Hossain hit an unbeaten 33 under pressure as Bangladesh levelled the one-day series against Sri Lanka 1-1 with a three-wicket win in the thrilling third and final match on Thursday.

Bangladesh, chasing a rain-revised target of 183 off 27 overs, won the day-night match with six balls to spare in Pallekele to register their fourth one-day victory against Sri Lanka in 33 matches.

The tourists needed 17 to win off the last 12 deliveries, but Nasir eased the pressure when he smashed three fours in an over from seamer Thisara Perera before Sohag Gazi hit the winning boundary.

“It’s a huge win for us,” said Bangladesh skipper Mushfiqur Rahim.

“It was a challenge for us to do well against big teams, so I am very happy with the effort. We have not been in such situations before and that’s why the boys were panicking, but we pulled it off.”

Bangladesh began their chase on an impressive note when Anamul Haque (40) and Mohammad Ashraful (29) put on 77 for the opening wicket in 12.5 overs before completing the upset win in the penultimate over.

Sri Lanka won the first one-dayer by eight wickets in Hambantota, while the second match at the same venue was abandoned due to rain.

Tillakaratne Dilshan earlier scored a 128-ball 125 to help Sri Lanka post a challenging 302-9 in 50 overs. The in-form opener, who made an unbeaten 113 in the first match, hit 12 fours in his 16th one-day hundred.

“We were disappointed as we had runs on the board. The bowling let us down today. We batted brilliantly even though we lost our way in the middle,” said Sri Lanka captain Angelo Mathews.

Sri Lanka were reduced to 263-7 before Lahiru Thirimanne hit a 15-ball 25 not out late in the innings to help his side cross the 300-mark.

Sri Lanka and Bangladesh will now play a one-off Twenty20 international in Pallekele on Sunday.