How far can they go?
Getting past the group stage should not be a worry for them, as it is expected to be a two-horse race between themselves and England. The duopoly isn't expected to be broken by Tunisia or Panama.
A potential fixture in the quarterfinals could be Brazil v Belgium and if that occurs, Martinez will know he has a mammoth task on his hands.
While they have to potential to go all the way, Eden Hazard and co. need to add consistency along with a proper tactical game plan to go forward in the big games. If that works out well for them, then we could expect the biggest success in their history to unfold before us.
However, losses against Argentina and Wales in the World Cup and Euros respectively, imply that they don't play to their full potential. It also indicates that they struggle to hold their nerves when it matters most.
It will be extremely interesting to see if they can manage to overcome these shortcomings.