Coming into bat as nightwatchman after Dhaka lost both their openers for 22 in fading lights on Tuesday, the young left-arm spinner more than justified his elevation with a solid 54 on the final day. His undefeated knock confirmed Dhaka's third straight win in the four-day competition.

Dhaka are now leading the six-team table with 20 points at the end of the fourth round, four points clear from their nearest challengers Sylhet, who scored an impressive victory over Barisal in this round.

The defeat on the other hand left Khulna lying in the third position along with Chittagong, both having collected ten points each. Rajshahi and Barisal have bagged six points.

Although Khulna left-arm seamer Syed Russell gave the visitors a confident start removing Test discard Sanwar Hossain in the second ball of the day, Sunny stuck to his guns like a true batsman as Dhaka chased 117 runs for a win on the final day.

Resuming the day on nine, the 19-year-old hit eight boundaries in his 143-balls undefeated vigil. He shared 62 runs for the unbroken sixth wicket with his captain Naimur Rahman, who scored 32 off 73 balls that featured four boundaries.

Sunny was also involved in a vital fifth-wicket stand with another national discard Sajjad Ahmed, who chipped in with 34 off 65 balls with five hits to the fence.

Although Khulna returned empty-handed their left-arm paceman Russell won the man-of-the-match award for his match haul of 11 wickets. The 19-year-old from Jessore captured four wickets in the second innings conceding 54 runs in 19 overs.

The fifth round matches of the country's lone first-class competition will start tomorrow.