Samarawickrama's composed knock seals SL's semi-final berth

Samarawickrama's unbeaten 48 and Praboda's career-best three wickets helped Sri Lanka survive Bangladesh scare

Sri Lanka 115 for 6 (Samarawickrama 48*, Marufa 3-21) beat Bangladesh 114 (Praboda 3-21, Mostary 34) by four wickets

Harshitha Samarawickrama's splendid 48 not out off 37 balls took Sri Lanka over the line in a low-scoring thriller against Bangladesh. The defending champions secured a semi-final berth with a four-wicket win, and by virtue of topping Group B, will play the side that finishes second in Group A on Friday.

An excellent opening spell of 2 for 17 from Marufa Akter put Bangladesh in firm control of the match after they posted a below-par target of 115, thanks to Chamudi Praboda's career-best figures of 3 for 21.

Sri Lanka found themselves behind the required run rate for much of the chase after losing their top order inside the powerplay and slipping to five down by the tenth over. But a resolute Samarawickrama brought Sri Lanka back into the contest by absorbing the pressure throughout the middle overs before landing the final punches to seal the win. This was Sri Lanka's seventh consecutive win over Bangladesh.

Praboda strangles Bangladesh

This was only the sixth international match the 17-year-old left-arm spinner had played after making her debut against Pakistan in a three-match T20I series last month, and she doubled her tally of wickets on Sunday.

As Bangladesh looked to rebuild after Juairiya Ferdous fell in the fifth over, Praboda struck in her first over, the seventh of the match, to send the dangerous-looking Dilara Akter back to the hut two balls after being hit for a boundary by her. Dilara made a run-a-ball 26 after adjusting to the slow surface. She made her attacking intent known in the third over when she dispatched three consecutive balls from Sri Lanka pacer Chethana Vimukthi for boundaries.

Praboda and the other Sri Lankan spinners bowled with great discipline and used their variations with great guile to put a stranglehold on the Bangladesh batters, who managed just 114 for 8.

With Sobhana Mostary (34 off 41) and Shorna Akter (9 off 14) stretching their steady 41-run stand into the death overs, the Bangladesh dugout must have anticipated a much bigger total than what they eventually managed. Their hopes were bulldozed by Praboda in her last over as she accounted for both batters inside three balls. The left-arm spinner bamboozled Mostary with flight to have her stumped before drawing Dilara into chipping a tossed-up delivery back to her.Chamudi Praboda starred with three wickets•ACC

An unlucky outing for Athapaththu

Nilakshi Silva and Vimukthi dropped sitters off Chamari Athapaththu's bowling, with the former putting down Mostary in the 14th over. Athapaththu eventually got a wicket in her last over, but missed out on a second when on-field umpire Humaira Farah turned down a clear caught-behind appeal off the last ball of her spell.

During the chase, her stay at the crease lasted only two balls, as Fahima Khatun took a sharp catch at first slip when she advanced down the pitch to smash Marufa over the top of her head. That shot, on any other day, would have landed in the stands, as is often the case when Athapaththu charges at the bowlers.

Marufa turns a straightforward chase into a contest

Bangladesh needed early wickets to make a contest of what many expected to be a cakewalk for Sri Lanka, with the required rate below a run-a-ball at the start of the chase. Marufa delivered exactly what was needed, accounting for both Sri Lankan openers.

Marufa had Athapaththu caught at first slip off the last ball of the first over before bowling a jaffa in her next over, rattling Imesha Dulani's stumps with one that ripped through the gate. Her three powerplay overs yielded 2 for 17.

Sri Lanka's middle order crumbled under pressure as Sanjana Kavindi was bowled by Sultana Khatun off the last ball of the powerplay. They were soon five down for 44 in the tenth over, but a gutsy 38-run stand between Samarawickrama and Nilakshika Silva brought them back into the contest and threatened to take the game away from Bangladesh.

Desperate for a breakthrough, Bangladesh captain Nigar Sultana returned to her trump card in the 17th over, and Marufa obliged with a perfect over to shift the momentum back in her side's favour. The seamer bowled Silva and conceded only four runs to finish with career-best T20I figures of 3 for 21. It was the fourth time in her 48-match T20I career that she had taken three wickets in the format.

Samarawickrama finishes the job

Ritu Moni had been immaculate in her first three overs, but Samarawickrama plundered 16 runs off her last over - the most conceded in an over in the match - to swing the game in Sri Lanka's favour.

A lucky inside edge off the second ball raced to the fine-leg boundary as Moni followed Samarawickrama after she backed away to make room on the off side. The next ball landed straight into the advertising cushion at midwicket as the batter swept the medium pacer for six. She then danced down the wicket to launch Nahida Akter for a towering six down the ground, reducing the equation to two off the final over.

The win came off the second ball of the final over, with the ball trickling past the keeper after brushing her pad.