West Indies have drawn first blood in the five-match one-day series with New Zealand after powering to a nine-wicket win via the Duckworth-Lewis method at Sabina Park.
The depleted Black Caps could only muster 190-9 from their 50 overs, and, despite a lengthy delay due to rain, the elements could not halt West Indies chasing down their revised target of 136 with 52 balls to spare.
Chris Gayle (63 not out) and Dwayne Smith (65no) both struck unbeaten half-centuries for the hosts, while Andre Russell was the pick of the bowlers with impressive figures of 4-45 from 10 overs.
Russell set the tone for the match with just the eighth ball when he induced an edge from Martin Guptill and Darren Sammy claimed a sharp low catch at slip.
Rob Nicol and Daniel Flynn put on 27 before Russell struck again, clean bowling the latter for 12 with the former out for 14 when he powered the ball to mid-wicket where Lendl Simmons awaited.
Dean Brownlie had made only one when he was lbw to Sunil Narine. The tourists needed a leader's innings from Kane Williamson and he put on 23 with BJ Watling before the debutant captain was out, feathering a Sammy delivery through to Denesh Ramdin.
His 24 was cautious, coming off 52 deliveries, and - at 71-5 - the visitors were teetering with a run-rate of just three per over.
Jacob Oram and Watling put on 46 before the former was bowled by Ravi Rampaul, his 32 coming off 39 deliveries and including two boundaries and two sixes.
Watling and Andrew Ellis enjoyed a stand of 44 before the latter became Narine's second victim when he was clean bowled for 14.
Kyle Mills (one) became Russell's fourth victim and Watling finally fell with a little over two overs remaining when he was lbw to Rampaul. His 60 came off 98 deliveries including five boundaries.
In reply, Gayle and Smith took the game away from New Zealand with an unbroken stand of 130 after Simmons had been snared by Mills for a duck.
Gayle smashed five sixes and four fours in his 57-ball unbeaten 63 while Smith top-scored with 65 from 77 balls, plundering six boundaries and three sixes.
The teams will contest the second ODI at the same venue on Saturday.