Denmark's coach Age Hareide credited his defense and goalkeeper Kasper Schmeichel to keep a 1
Schmeichel made six rescues and Peru came close to scoring a number of other opportunities as well, and Hareide was careful to underestimate South Americans, who played in their first World Cup game since 1982.
"Peru is a very good team We have a lot of respect for the Peruvians. They received a lot of this game, they probably deserve more, "said Hareide.
Hareide has moved away from the free floating "Danish dynamite model", favored by its predecessor Morten Olsen and disappeared in defense. The victory marked the first time in Denmark's history that they have held five consecutive clean sheets.
"You must confirm the execution of [goalkeeper] Kasper [Schmeichel] but also for our defense, for the whole team" Hareide said. "This is our fifth game without giving a goal. It's very tough against World Cup opponents."
Hareide also acknowledged that his team struggled to come to terms with the occasion and that they were addicted to Schmeichel to keep them in play as Peru was heated.
"I think we were a little afraid of the atmosphere, the intensity of it. We have not exercised so much, but we have been doing much to be a team." Hareide said. "The team's morale was very good. We were under pressure, they came up with so many men … It's good to have a good goalkeeper, let me say that!"
Peru coach Ricardo Gareca agreed with his counterpart that the result did not reflect a true picture of the match, with his side rueing a terrible punishment by Christian Cueva who would have posted them a few minutes before half-time.
"It was a very competitive game. Show, Peru did as much as possible to win the game and score," said Gareca. "I have nothing to say to my players, they did their best, I really can not complain. I generally think that the outcome does not really reflect what happened to the plan."
Cueva was comforted by team comrades and was visibly upset when he left the plane at the break.
"At half-time, he told him to continue playing strong and stay in the match," said Gareca. . "Of course people make mistakes, there are always mistakes, and we have to turn around things. He has the personality to turn it over. After the punishment he stayed there, asking for the ball. I think he recovered."
The coach had no one regrets not to start with Paolo Guerrero, Peruvian captain and top scorer, whose oppression from a ban on doping just before the start of the tournament came as a big boost to the incas. Guerrero had an immediate effect when he arrived a few minutes after the Danish goal and came close to points several times.
"That's the decision we made." This team has played well [without him] "he said.  Peru had in no way lost hope, he added to France on June 21 and Australia five days later.
" We must agree with this defeat so let's put this match behind us and see how we can best meet France, "he says. "I do not think Peru deserves to lose, but we can not cry over spilled milk. We need to recover quickly to meet France."
Information from Reuters was used in this report.