The Vantage Black Sticks Women have been handed their first loss at the FIH World League Semi-Final after being edged 1-0 by hosts Belgium.
Belgium played an up tempo attacking game against the Kiwis, who were strong on defence until a 44th-minute goal broke the deadlock.
The Black Sticks created plenty of their own chances but struggled to break down the Belgians' defence in the crucial stages with 11 shots at goal and six penalty corners during the match.
Assistant coach Sean Dancer said it was a tough clash against Belgium who are in form and benefited from a home crowd.
"We knew Belgium were going to be a tough game and they certainly proved that today. They're a side who has progressed immensely over the past 12 months," he said.
"They were able to shut us down in some parts of the game and we struggled to respond to that pressure.
"We need to go away and make sure we put together a top performance against Malaysia to get some momentum going into the quarter-finals."
It was a fast-paced opening quarter with both sides creating chances on attack but unable to put goals into the back of the net.
Belgium had the advantage in possession in the first half although the Black Sticks played very well on defence to keep out of trouble.
The hosts broke the shackles late in the third quarter when Anouk Raes put on a spin move in the circle and hit into goal between the legs of goalkeeper Sally Rutherford.
New Zealand battled to find an equaliser after the goal and had several great chances from penalty corners but Belgium's desperate defence held firm.
The Vantage Black Sticks play Malaysia in their final pool match at 2:00am on Wednesday morning (NZT), with live coverage on SKY Sport.