Denmark's World Cup opening game against China will be the most crucial one in Group D as the winner will possibly qualify for the knockout stage at the loser's expense, Denmark head coach Kenneth Heiner-Moller said on Sunday.

"I think it is a key match for the group, both teams will try to win and the win will put them through to the quarter-finals," Heiner-Moller told Xinhua.

"For me, Brazil is the best team in the group, and China and Denmark will compete for the second slot.

"New Zealand will participate as well, but I still think one team between China and Denmark will get the berth," he said.

Denmark will play the hosts on Wednesday, and Heine-Moller claimed he knows everything about China.

"I saw all their warm-up games. Under Marika Domanski, the individual development of some players is incredible, she has done a piece of great job," he said.

When asked if he has designed the plan to cope with China, he said: "I would rather keep it to myself."

He warned his Chinese opponents that their home advantage could yield a double-edged sword effect.

"I think China is under a lot of pressure," he said.

"In the game, if they score a goal in the first five minutes, everybody will be behind the team, but if the waste a goal chance in the first five minutes, the stand will be very silent," he said.

(Xinhua News Agency September 10, 2007)