Masudur Rahman Mukul won the high-scoring drama for the surprise package in the Cup phase when the number eight batsman hammered a blazing unbeaten 49 off just 37 balls.

Masudur, a seasoned cricketer better known for his exploits as an off-spinner, completed one of the biggest run chases that Dhaka cricket has ever seen when he smote a six and then sneaked a single in the nerve-wrecking final over as Beximco overhauled Biman's massive 286-6 with three balls to spare.

The match reached its climax when Beximco needed eight runs from the final over with one wicket in hand and Masudur was stuck at the non-striker's end. But last batsman Suja Erfan pushed left-arm seamer Syed Russell's first ball to the covers and then ran as if his shirt was on fire, giving Masudur a chance for a last hurrah.

He seized the opportunity to finish the chase in style, whacking the young pacer's very next ball over the mid-wicket fence to level the scores. Masudur then angled the next delivery in between the two fielders on the on-side to bring up the winning run and punched the air in celebration.

The defeat was heartbreaking for national flag carrier after a six-match unbeaten run in the competition.

Masudur rounded off a fantastic run-feast that started with a bang thanks to a 46-run opening stand in just 4.4 overs between Sajjad Ahmed and Moniruzzaman.

Beximco's star Kenyan batsman Steve Tikolo also showed he had not lost his run appetite with a characteristically aggressive 48-ball 56 that featured eight fours and one six.

Returning to Dhaka after three years, the muscular right-hander could have gone on for much longer had umpire Jahangir Alam not adjudged him leg-before. Tikolo was stunned by the ruling and waited a few seconds before trudging back to the dressing room.

The Kenyan master batsman, who piled up tons of runs while playing for Mohammedan Sporting Club a couple of seasons ago, also picked up three wickets for 56 from 10 overs to complete a satisfactory day at the office.

Neeyamur Rashid also made a vital 30-ball 35 but Masudur's heroics overshadowed everything else.

Coming into bat with his side still needing 81 runs from 11.3 overs, he virtually single-handedly carried Beximco to a memorable victory.

Earlier, Biman thrived on three half-centuries to post what they thought was a winning total.

Opener Humayun Kabir scored 56, skipper Sanwar Hossain contributed an unbeaten 62 and Biman's Pakistani recruit Ashraf Ali blazed his way to 68 after they won the toss and decided to bat on a placid wicket.