How have Benfica, Porto and Sporting performed?
Matchday Three saw Sporting lose 4-3 in an incredible match in Germany against Schalke 04, while FC Porto continue to sit pretty at the top of Group H following a 2-1 win over Athletic Bilbao. Benfica will attempt to haul themselves back into contention at Monaco on Wednesday night.
PortuGOAL runs the rule over how the Portuguese trio have performed so far and what their prospects are for the rest of the tournament.
We also look at the major tactical issues facing each of Portugal's three main teams at this stage of the season.