Clashes between the Iberian duo always generate their fair share of excitement, but there is much more than local pride at stake on Sunday. Three points will take the Spanish into the quarter-finals and with Amarelle, Nico and Javi Alvarez on fine form so far in Rio they will be confident of getting them.
Alan was Portugal's saviour against Iran and the three-goal hero could be the man to take the pressure off Madjer. A win in normal time may be enough to take them through, but coach Jose Mateus will also be looking for a much-improved performance.
Despite picking up a back injury, Spanish defender Nico is expected to play, while Portugal have no injury worries.
The two sides have never faced each other before in the finals. In four meetings in European qualifiers honours are even with two wins apiece.
This is a game we need to win if we want to go through. It's going to be a close match between two very effective sides who know each other extremely well. Madjer, Portugal forward.