Barcelona coach Xavi praised Sergi Roberto after victory over Cadiz.
Roberto scored in the 2-0 win.
Xavi later said: "Sergi always performs in different positions. The criticism of him has been really unfair, among the worst I have seen in my career.
"This is a player who's come through at the club. He performs wherever he plays, he never complains, he's a tremendous captain, selfless, loves the club...
"I have blind faith in him."