GROS ISLET, St Lucia – Left-arm orthodox spinner Keshav Maharaj snatched a dramatic hat-trick in a devastating five-wicket haul as West Indies suffered a 158-run beating, half-hour before tea on the fourth day of the second Test, to slide to a 2-0 series whitewash on Monday.Resuming the morning on 15 without loss in search of a victory target of 324, the Caribbean side crashed from 90 for two to 109 for six at lunch, as Maharaj knocked over Kieran Powell (51), Jason Holder (0) and Joshua Da Silva (0) in successive deliveries in the penultimate over before the first interval.