But Belgium, ranked 13th in the world, took a shock halftime lead with two goals in two minutes. Belgium capitalised on some poor New Zealand defending as the Black Sticks failed to clear from their own circle on three occasions before Louise Versavel sent in the equaliser. Then less than two minutes later Jill Boon fire them into the lead with a rocket strike from just inside the circle.
Whatever was said at halftime seemed to work for New Zealand. The Black Sticks re-took the lead with two quick goals after the break to Shiloh Gloyn and Merry. Merry then added a second in the final quarter from a penalty corner to secure the three points.
"The pleasing thing is we came out after halftime and executed some corners really well, to come away with a win is good," Hager added.
"We didn't underestimate Belgium, we are in a really tough pool, we're up against Japan next who I thought played really well against Australia".
The Black Ferns face Japan tomorrow night after they lost 3-2 in the group's opening game yesterday. The top team in each group advances to the quarter-finals while second and third sides move onto a quarter-final playoff game.