With a much sterner test awaiting them in the Vicente Calderon, this game was a chance for Tata Martino to welcome back injured players and tinker with his formation and personnel.
After a reasonable league start, the visitors are really beginning to find life tough in the top division, with only one win since the start of November. A poor return, which has seen them slide towards the bottom half of the table.
Barca stays ahead of Atletico Madrid by virtue of their superior goal difference, leaving all to play for next week.
Let's take a look at six things we learned from this game.