Rachin Ravindra and Finn Allen, two men who were part of New Zealand's disastrous Under-19 World Cup campaign two years ago in Bangladesh where they finished tenth, opened the 2018 edition at home with stirring displays. West Indies, the defending champions, slumped to a eight-wicket defeat at Bay Oval in Mount Maunganui, the manner in which they collapsed reminiscent of their seniors, who endured a winless tour of New Zealand not too long ago.