West Indies 169 for 6 (Taylor 51 retd hurt, Matthews 40, J Kerr 3-29) beat New Zealand 168 (Down 53, A Kerr 30, Matthews 2-23, Ramharack 2-28, Fletcher 2-31) by four wickets
But Alleyne’s unbeaten 27 in 34 balls led her side to a four-wicket win with more than six overs to spare.
They added 44, the highest stand of the innings, as Down kept ticking along to reach her half-century off 70 deliveries in the 39th over. However, Karishma Ramharack got rid of Plimmer off the very next ball, and that led to a quick finish for New Zealand.
From 148 for 5, they could only another 20 runs, with Matthews getting Down for 53, before wrapping up the tail with Ramharack. In the end, 168 didn’t prove enough for New Zealand to complete a 3-0 sweep.
West Indies lost the series 2-1 despite a win in third ODI, with the tour now moving along to the five T20Is, all of which will also be played in North Sound, starting September 28.