After a difficult tour of England, in which they were whitewashed in the Test series, New Zealand have shown that they are a serious threat in the short form of the game.
Given that the team batting second had won every match in this tournament, Brian Lara appeared to have no hesitation in putting New Zealand in to bat.
The pattern of the day was set in only the third over when Chris Gayle dropped Stephen Fleming
But this was the second time the pitch had been used this week, and it was dry and cracked.
Sir Viv Richards expressed his surprise at the time, because lurking in the New Zealand line-up are the likes of Chris Harris, Scott Styris and Daniel Vettori
All three proved their reputations as bowlers who take the pace off the ball and, on a slow pitch, are extremely difficult to hit.
New Zealand's fielding was ruthlessly disciplined
The pattern of the day was set in only the third over when Chris Gayle dropped a straightforward offering from Stephen Fleming when he had made only seven.
Heads dropped immediately because Fleming has been the in-form batsman of the series, and he and Nathan Astle proceeded to put on 120 for the first wicket.
Hamish Marshall and Craig McMillan took the score to 217-3, before the West Indies came fighting back through the brave decision by Lara to bowl Ramnaresh Sarwan.
The leg-spinner took 3-31 - his best figures in international cricket as New Zealand suddenly lost seven wickets for 49 in 58 balls.
Having hit 13 fours in their first 16 overs, they managed to strike only four and a six in the remaining 34.
Having been on course to score 300 or more, they had to settle for 266 - a good score, but it was by no means secure.
Unlike his counterpart earlier on, Styris made no mistake when he was offered an early slip chance, and Gayle was on his way for four.
Vettori was responsible for seven of the wickets to fall
It was an uphill battle from then on for Lara's team, and they were hardly helped by the running-out of both Sarwan and Devon Smith.
This illustrated New Zealand's domination in the field - they were by far the best of the three teams involved.
Vettori combined his excellent bowling - he dismissed Lara lbw for 30 on his way to 5-30 - with a deadly arm that brought two run outs with accurate throws.
One of the biggest cheers of the day came when the popular Chris Harris finally claimed his 200th wicket in one-day cricket.
West Indies can claim with some justification to have had the worst of the conditions.
But New Zealand deserved their win and they will return in September full of confidence for the Champions Trophy.