Top order batsmen, Mohammed Simba, skipper Amos Daniel, and Anaely Thadeo, put spirited showing, seeing to it Macechu Stars notch 133 runs for three wickets in 20 overs when they went in to bat first.
Simba that opened the innings with Daniel was the batsman that was most impressive given he scored 38 runs, which included three fours.
Daniel notched 29 runs not out, hitting two fours, with Thadeo chipping in with 27 runs that included two fours.
Yusuph Saidi's 18 runs not out had Macechu Stars making their way back with the triple-digit score once they completed their innings.
Omary Hilal ended with two wickets in four overs during Usambara Development's turn with the ball.
In response, Usambara Development exhibited their batting prowess, which saw them emerge victorious, scoring 134 runs for the loss o two wickets in 12.5 overs.
Riziki Kiseto, Usambara Development team's skipper, led the successful chase given the cricketer recorded unbeaten 89 runs.
The opener almost single-handedly won the clash for the youthful squad, cracking 13 fours in his impressive outing.
Fellow opener Hilal executed good knocks and contributed to the eventual success, as he scored 21 runs which consisted of four fours.
Macechu Stars' efforts to defend their total hit a snag, with Said and Simba so far posting a wicket apiece.
The resounding win has helped Usambara Development tighten their grip on the five-team tournament's first spot, as they have notched a victory in three fixtures and lost one.
The league leaders have notched 550 runs and gave away 369 runs, recording 4.4784 in net run rate.
Annadil Burhani Tanga cricketers sit second, as they have come out victorious in three clashes they have taken part in.
Third-placed Tanga Women Combine, the only women squad in the competition, recorded three wins and defeat in two games to hold on to the spot.
Amboni Stars cricketers sit fourth, given they have notched a victory in one tie and lost four matches.
Bottom-placed Macechu Stars have as well posted victory in one duel, they have though an inferior net run rate, -4.2809, as they have notched 420 runs and gave away 605 runs.