Barcelona coach Gerardo Martino has praised the form of his goalkeeper Victor Valdes after Saturday's 4-0 win over Rayo Vallecano.

The Catalan giants kept up their 100% record in La Liga, thanks to Valdes, who saved a first-half penalty.

The 31-year-old was in fine form throughout the league clash, pulling off a string of impressive saves to keep a clean sheet.

"Valdes is playing at a fantastic level and all I can do is enjoy it as his manager," Martino told reporters. "He had decisive saves and he saved a penalty."

The 50-year-old coach also singled out Alex Song and Martin Montoya for praise, as he looks to introduce some more of his squad players to the side during a busy period.

"Alex Song and Martin Montoya played very well," the Argentine added. "They are at a good level despite the fact that they don't get a lot of playing time."

Barca face Real Sociedad in the league next Tuesday.