When Christian Eriksen collapsed with no one around him, every football fan would have been fearing the worst.
Eriksen's team-mates knew it was serious, immediately calling for the medics before both Denmark and Finland's players began looking to the sky and praying for the midfielder.
It was horrific to watch as one medic appeared to be desperately pumping his hands on Eriksen's chest with the utmost urgency.
The shocking scenes were reminiscent of when former Bolton midfielder Fabrice Muamba collapsed with a heart attack during a game against Tottenham in 2012.
Muamba, who was forced to retire from football after suffering a cardiac arrest during the game at White Hart Lane, knows the severity of these situations, having been dead for 78 minutes before he was brought back to life.