Barcelona have suffered and achieved an important victory in Mestalla with an important goal of Lionel Messi with his left footed shot from the centre of the box to the bottom left near post assisted by Adriano in minute 75. Barcelona continued their unbeaten away run and put Real under extra pressure to win at home to Malaga on Thursday.
In the ninth minute Messi went clean through on goal but the Argentine fluffed a chance he usually buries on autopilot.
Messi had three chances to score but missed them all with goalkeeper Vicente Guaita, third choice at the beginning of the season, standing tall.
Pep Guardiola had never triumphed at Mestalla as Barcelona's manager in the Primera Division, but knew that a win would send his side a mammoth ten points clear at the summit.
Messi scored his 27th goal in La Liga 2010-11 and 3 goals ahead of Cristiano Ronaldo (24).