Brazilian forward Deyverson silenced the Nou Camp when he stabbed home Kiko Femenia’s cross from seven yards. Barcelona suffered a shock home defeat by newly promoted Alaves as manager Luis Enrique left Lionel Messi and Luis Suarez out of the starting XI.
Ibai Gomez scored the winner – beating debutant keeper Jasper Cillessen from just inside the area – soon after Messi came on for the La Liga champions. Barca are three points behind leaders Real Madrid, who beat Osasuna 5-2 earlier on Saturday in Ronaldo’s first game back from injury.
Defender Jeremy Mathieu headed the equaliser from Neymar’s corner. Suarez was introduced after Gomez’s goal but Alaves hung on to claim a first league win at the Nou Camp since 2000.