It's advantage Portugal in the battle of the Iberian countries, as Porto secured a 1-0 win at home to Malaga on Tuesday night.
Joao Moutinho's expertly taken, first time finish was the difference on the evening, as the Portuguese side ensure they'll have an advantage to take to Spain.
Malaga will offer few complaints, largely outplayed on the night, Manuel Pellegrini will just about be content to have only lost 1-0.
It leaves the tie intriguingly poised ahead of the return leg at La Roasaleda in Andalusia.
UEFA Champions League; Estadio do Dragao, Porto, Portugal
FC Porto 1-0 Malaga (Moutinho) Full time
Porto: Helton; Danilo, Otamendi, Mangala, Alex Sandro; Izmailov (Atsu), Fernando, Moutinho, Lucho González (Castro); Varela (James Rodriguez), Jackson
Malaga: Willy; Sergio Sánchez, Demichelis, Weligton, Antunes; Joaquín (Portillo), Toulalan, Iturra (Camacho), Isco; Santa Cruz, Baptista (Piazon)