Artem Dovbyk struck a hat-trick inside seven minutes as minnows Girona powered back to the top of La Liga with a thumping 5-1 win over Sevilla on January 21.
After Real Madrid scraped a controversial 3-2 win over bottom side Almeria and Ferran Torres's own treble helped Barca win 4-2 at Real Betis, Girona demonstrated their title credentials.
The Catalan club, in the top flight for only the fourth season in their history, are shock challengers for the Spanish title and lead second place Madrid by a point, having played one extra game.