Real Murcia scored three times in the final six minutes as Gustavo Siviero's men fought back from a goal down to beat Barcelona B 3-1 at the Estadio Nueva Condomina.
Jean Marie Dongou's 33rd-minute strike proved the difference for more than half the match, only for Kike to bag an 84th-minute equaliser.
With both sides heading for a share of the spoils, Dominique Malonga pounced in the closing stages to fire the hosts into a dramatic lead, before Saul secured the points from the penalty spot shortly before full time to cap an impressive comeback for Los Pimentoneros.
As result, Siviero's charges move into the playoff places in the Segunda Division and strengthen their promotion bid to the Spanish top flight.