When: Saturday June 12, 17:00 GMT
How to watch: BBC
Given Belgium's strength, it seems more than likely that the other three teams in Group B are playing for second place.
Denmark back among the elite
It is sometimes easy to forget that when talking about Denmark we are talking about former European champions.
The Danes failed to qualify in 2016, but they will be back among the European elite again this summer.
The current Denmark side is not at the same level as their predecessors in previous generations, although Kasper Hjulmand does have a good core or players at his disposal.
Goalkeepers: Kasper Schmeichel, Jonas Lossl, Frederik Ronnow
Defenders: Simon Kjaer, Andreas Christensen, Jannik Vestergaard, Joachim Andersen, Mathias Jorgensen, Daniel Wass, Jens Stryger Larsen, Joakim Maehle, Nicolai Boilesen
Midfielders: Christian Eriksen, Thomas Delaney, Pierre-Emile Hojbjerg, Mathias Jensen, Christian Norgaard, Anders Christiansen
Forwards: Kasper Dolberg, Jonas Wind, Andreas Cornelius, Martin Braithwaite, Robert Skov, Mikkel Damsgaard, Yussuf Poulsen, Andreas Skov Olsen
Finland finally get their turn
While Denmark are generally involved in major tournaments, Finland are making their debuts in terms of major international tournaments.
That makes them genuine outsiders in a tough group, but that didn't stop Iceland from making their mark on international football five years ago.
Markku Kanerva's side will certainly be keen to make the most of the underdogs tag, and a starting with a win could put them in a strong position to qualify for the knockout stages.
Goalkeepers: Lukas Hradecky, Jesse Joronen, Anssi, Jaakkola
Defenders: Thomas Lam, Paulus Arajuuri, Jere Uronen, Juhani Ojala, Sauli Vaisanen, Nikolai Alho, Daniel O'Shaughnessy, Niko Hamalainen, Leo Vaisanen, Robert Ivanov
Midfielders: Jasin Assehnoun, Onni Valakari, Pyry Soiri, Fredrik Jensen, Joni Kauko, Glen Kamara, Rasmus Schuller, Tim Sparv
Forwards: Teemu Pukki, Lassi Lappalainen, Marcus Forss, Joel Pohjanpalo
Denmark wins: 38
FInland wins: 11
For Finland, it feels a little like if Teemu Pukki doesn't score, its hard to see who will.
He also has the added incentive of being just two goals short of Jari Litmanen's all-time record total for Finland, and he is always a decent bet to score anytime.
For Denmark, it's usually hard to overlook Christian Eriksen. He wouldn't describe himself as a goalscorer, but on the biggest stage, he seems most likely to produce for the Danes in a close match.