Usman ensured that they didn't undo the good work put in by their bowlers in restricting Bangla-desh to a paltry 142 off 39.1 overs.
He came to the crease at the fall of the third wicket and held the innings together even as UAE kept losing wickets at regular intervals. He forged useful partnerships to take his side home in the 46h over.
Earlier, UAE did a splendid job of shutting out Bangladesh A for 142. The visitors were rescued by a 44-run fourth wicket stand between Raqib Hassa and Sanur Hossan. Hassa made 22 off 40 balls while Hossan struck 33 off 33 deliveries.
Bangladesh won the four match series 3-1.