The Scandinavians' coach was left with injury concerns after a hard-fought 1-0 victory over Peru, who he admitted were unlucky to lose
Denmark head coach Age Hareide fears he may have lost William Kvist for the rest of the World Cup after battling past Peru in a 1-0 victory.
Yussuf Poulsen slotted home on 59 minutes after being put through on goal by Tottenham midfielder Christian Eriksen, but Denmark rode their luck at times against Ricardo Gareca's attack-minded team.
Christian Cueva missed a penalty after he was tripped by Poulsen at the end of a first half in which Peru created the better chances, and Hareide was quick to credit the South Americans after their first World Cup game in 36 years.