Yussuf Poulsen's smart finish gave Denmark an undeserved opening victory at the World Cup as Christian Cueva's penalty miss came back to haunt him in Peru's first World Cup match for 36 years.
The big team news was the absence of Peru captain Paolo Guerrero, the country's all-time top scorer whose drugs ban was temporarily lifted just weeks before the tournament. Jefferson Farfan led the line in his place. Tottenham's Christian Eriksen was one of four England-based players in the Denmark starting XI.
Peru recorded the first shot on target of the match with Yoshimar Yotun's well-struck hit from range, but Kasper Schmeichel got everything behind it.