Their teenaged team has brought a welcome, long overdue whiff of optimism to West Indies cricket.Their victory over India in the Under-19 World Cup final in Dhaka, Bangladesh yesterday demonstrated a resilience that has been repeatedly beyond their seniors.It doesn't necessarily follow that success at a global age-group competition leads to success at the higher level.Once they outlive the age limit, some top teens drift away from the game into other pursuits; others won't develop sufficiently to qualify for Test or limited-overs selection.The enthusiasm of TV commentators Ian Bishop, Paul Allott and Daryll Cullinan, all Test players, might reflect the widespread desire for a West Indies revival. Bishop recommended the immediate inclusion into the senior squad of Alzarri Joseph, the strapping Antiguan, who was the most exciting find of the tournament.After the West Indies victory over Pakistan in the quarter-final, Allott said the pace from Joseph and late replacement Chemar Holder, and the aggression of the batting, took him back to the West Indies' heyday.Cullinan was excited to see a West Indies team with such talent play with such conviction.The obvious questions now are whether the players can carry the benefits of such experiences forward to first-class and eventually international level, and whether their best can somehow be kept away from the financially enticing clutches of T20 franchise tournaments. -ESPNCricinfo..