GEORGETOWN, Guyana – Captain Ackeem Auguste struck a half-century but West Indies Under-19s remained haunted by their batting woes, and slumped to a six-wicket defeat to Australia Under-19s in their opening match of the ICC Under-19 World Cup on Friday.In a hugely disappointing start to their campaign but a continuation of their recent form, the hosts could only muster 169 all out in the 41st over at the Guyana National Stadium, with the left-handed Auguste stroking a fluent 57 from 67 deliveries.Wicketkeeper Rivaldo Clarke chipped in with 37 from 42 balls while McKenny Clarke arrived late to smash a swift 29 from 35 deliveries.In reply, opener Teague Wyllie carved out a compact, unbeaten 86 as Australia Under-19s strolled to their target in the 46th over.