Real Madrid have won their third consecutive league game, beating Roma 3-0 in Porto.
The hosts had the better chances, as they forced several long saves from goalkeeper Raul Jimenez, while Cristiano Ronaldo made the decisive save with his head after the break.
It was a first for the Portuguese, who has been in good form this season, with two goals in his last three matches.
Roma, who had lost three of their last four games, are in their fifth league match in six days.