Dani Olmo made an immediate impact in his Barcelona debut by scoring the decisive goal for the Catalans in their 2-1 victory against Rayo Vallecano.
The Spanish midfielder, who missed Barcelona's first two matches of the season because he was not registered, came on at halftime and scored with 10 minutes remaining to help Barcelona win all three points.
Barcelona's next game will be a clash against Valladolid at the Camp Nou on Saturday.
