Barcelona continued their 100% start to La Liga with a narrow victory over Valencia.
Alex Song was a notable inclusion in the Barca 11, making his league debut for the Catalan giants.
The decisive goal came from an unlikely source, with Brazilian full-back Adriano launching an unstoppable strike from the edge of the penalty area to make the breakthrough.
Barca spurned chances to increase their advantage, most notably when Cesc Fabregas clipped the post with a chip from close range.
Victor Valdes kept his first clean sheet for nine competitive matches despite late pressure from Valencia to secure all three points.