Shakib Al Hasan smashed an explosive 92 not out to power Bangladesh into the triangular one-day series final with an upset five-wicket win over Sri Lanka here on Wednesday.
The left-hander cracked two sixes and 10 fours in his 69-ball knock as Bangladesh surpassed Sri Lanka's total of 147 with 7.1 overs to spare in a match reduced by fog to 31 overs a side.
The hosts will clash with Sri Lanka again in Friday's final after both teams finished their league engagements with five points apiece, including a bonus point, with a win each.
Zimbabwe, who also won one match, ended with four points.
It was only the second win by Bangladesh over Sri Lanka in 25 one-day internationals.
The hosts were reeling at 11-3 following a pair of run-outs, but Hasan flayed the Sri Lankan attack with his hard and clean hitting. He added 91 for the fourth wicket with skipper Mohammad Ashraful (26).
Naeem Islam (12 not out) finished the match in the 24th over when he lofted unorthodox spinner Ajantha Mendis over long-on for a six, with Hasan just eight runs short of his third one-day century.
Hasan, 21, was not the only star in the Bangladeshi victory as debutant fast bowler Rubel Hossain (4-33) and paceman Mashrafe Mortaza (3-25) earlier shared seven wickets to restrict Sri Lanka to a modest total.
Sri Lanka were 95-3 following Sanath Jayasuriya's 54, before losing their last seven wickets for 52 runs, with the 19-year-old Hossain striking at regular intervals in the closing overs.
The tourists were struggling at 4-2 after being put in to bat, but veteran left-handed opener Jayasuriya steadied the innings with a 71-run stand for the third wicket with skipper Mahela Jayawardene (28).
Mortaza did the early damage when he trapped Upul Tharanga with his third delivery and then bowled Kumar Sangakkara in his next over, with both batsmen failing to open their accounts.
The paceman then held a return catch to remove Jayasuriya, who struck seven fours in his 67th half-century. The Sri Lankan also completed 1,000 runs against Bangladesh during his 64-ball knock.
Chamara Kapugedera was the other notable contributor with a 30-ball 28, but the remaining batsmen failed to cope with the Bangladeshi pace duo in the closing overs.
Scoreboard
| U. Tharanga | lbw b Mortaza | 0 |
| S. Jayasuriya | c and b Mortaza | 54 |
| K. Sangakkara | b Mortaza | 0 |
| M. Jayawardene | c R. Hossain b Naeem | 28 |
| C. Kapugedera | b Alam | 28 |
| J. Mubarak | run out | 10 |
| A. Mathews | c Mortaza b R. Hossain | 2 |
| T. Thushara | c Rahim b R. Hossain | 0 |
| N. Kulasekara | c Naeem b R. Hossain | 5 |
| M. Muralitharan | not out | 6 |
| A. Mendis | c Ashraful b R. Hossain | 0 |
| Extras | lb3, nb1, w10 | 14 |
| Total | for all out | 147 |
| Fall of wkts | 1-0, 2-4, 3-75, 4-95, 5-124, 6-128, 7-130, 8-135, 9-141 |
| Mortaza 7-1-25-3 (w2), Alam 4-0-25-1, R. Hossain 5.3-0-33-4 (nb1, w5), S. Hasan 6-0-24-0, Naeem 6-0-24-1 (w3), Mahmudullah 2-0-13-0 |
| Tamim Iqbal | run out | 9 |
| Junaid Siddique | run out | 0 |
| Mushfiqur Rahim | c Sangakkara b Thushara | 1 |
| Mohammad Ashfraful | c Jayasuriya b Kulasekara | 26 |
| Shakib Al Hasan | not out | 92 |
| Raqibul Hasan | c Muralitharan b Mendis | 3 |
| Naeem Islam | not out | 12 |
| Extras | lb5, w3 | 8 |
| Total | for five wickets | 151 |
| Fall of wkts | 1-0, 2-10, 3-11, 4-102, 5-126 |
| Kulasekara 6-1-45-1 (w1), Thushara 4-1-12-1, Mendis 6.5-0-37-1 (w1), Mathews 1-0-12-0, Muralitharan 6-0-40-0 (w1) |
