Paris Saint-Germain and Real Madrid are all square at the Parc des Princes following a goalless opening 45 minutes in their Champions League group-stage tie.
Marcelo came close to making an early breakthrough for the visitors when sending an effort wide of goal inside the opening five minutes, but the first big moment arrived soon after when Blaise Matuidi forced Keylor Navas into making a save down low.
The contest remained evenly balanced for large parts of the opening quarter, as Thiago Silva and Toni Kroos both saw attempts to edge their respective sides ahead end wide of the target.
Madrid were able to up things slightly with a quarter of the contest played, with Kroos testing Kevin Trapp in goal before Cristiano Ronaldo saw two attempts of his own blocked away by the PSG stopper.
It was the visitors who finished the half very much on top, too, after Ronaldo once more came close to breaching the Parisians' goal with a shot that Trapp again did well to keep out.