The home side currently play their football in Spain's third tier, but they competed in La Liga as recent as the 2010-11 campaign and incredibly recorded a 2-0 victory at Camp Nou during that particular season.
Barcelona, meanwhile, are 28-time winners of this competition and have indeed lifted the trophy in each of the last two seasons.
Nothing will be decided tonight, however, with the second leg to come at Camp Nou on December 21 during what will be a busy period for the Catalan outfit.
HERCULES: Buigues; Dalmau, Pena, Roman, Rojas; Pedro, Gaspar, Omgba; Mainz, Juanma, Salinas
BARCA: Cillessen; Vidal, Borja, Umtiti, Digne; Denis, Alena, Rafinha; Carbonell, Alcacer, Turan
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