rounder Naeem Islam held his nerve to score an unbeaten 73 from 90 balls and lead Bangladesh to a one-wicket victory over Zimbabwe in the fifth one-day international Thursday. The host won the five-match series 4-1. Naeem's maiden one-day international half-century took his team to 222-9 from 49 overs after Zimbabwe had scored 221-9 from 50 overs. Brendon Taylor compiled an unbeaten 118, his first one-day century. Zimbabwe had looked set for a consolation victory after Taylor's lone battle against the Bangladesh spinners.