"I don't think New Zealand had one serious shot on the goal in the whole game. We did not concede a single corner," said Oltmans, expressing satisfaction at the manner in which India turned around their game after yesterday's disappointing 0-1 loss to Malaysia.
India needed a two-goal victory over Malaysia to secure their second consecutive entry into the final of this tournament, but played an erratic match to end up losing to the hosts, who had lost three previous matches.
"Our defence was really well organised today. They kept the structure really well," said Oltmans.
"We also managed to create a lot of goal-scoring opportunities. If one wants to be critical, we didn't score as many goals from the opportunities that we created. The way we finished that off is not good enough yet. That is something we need to work hard on.
"We were also unlucky at times as the ball rebounded off bar on one instance," the coach added.