Daniel Vettori took a screamer to dismiss West Indies batsman Marlon Samuels.
Trent Boult has used the movement on offer to run through oppositions.
Currently, West Indies are 108 for the loss of four wickets after 14 overs, with opener, Chris Gayle on 53.
With this, Trent Boult also becomes the highest wicket-taker of the tournament so far with 19 scalps.
Currently, West Indies are 80 for the loss of three wickets after 9.1 overs, with opener, Chris Gayle on 36.
Currently, West Indies are 80 for the loss of two wickets after nine overs, with opener, Chris Gayle on 36.
Martin Guptill smashed an unbeaten 237 from 163 balls against West Indies.
The 28-year-old opener's total surpassed the previous World Cup best of 215 made by Chris Gayle.
Currently, West Indies are five for the loss of a wicket after three overs, with opener, Chris Gayle on 11.
Martin Guptill's innings was also the highest individual score in World Cup history.