The Basque side win the derby against Athletic Club with back-to-back 1–0 victories and book their place in the final of the Copa del Rey Mapfre.

Five years after battling for the trophy in Seville, Real Sociedad and Athletic Club will meet this Wednesday for a place in the final of the Copa del Rey Mapfre.
Despite the defeat on the night, Atleti book their ticket to Seville.
FC Barcelona and Atlético de Madrid meet this Tuesday in what will be their 50th Copa del Rey encounter — a second leg overshadowed by the emphatic 4–0 result at the Metropolitano.
The match that will decide the most historic competition in Spanish football will kick off at 9:00 p.m. at La Cartuja Stadium in Seville.
Atlético de Madrid took a huge step toward the Copa del Rey final with a commanding 4–0 win over FC Barcelona, thanks to goals from an Eric García own goal, Antoine Griezmann, Ademola Lookman and Julián Álvarez.
Real Sociedad, thanks to a goal from Turrientes, take the edge in the Basque derby in the race for a place in the grand final, which will ultimately be decided at Anoeta.
Athletic Club and Real Sociedad kick off the semifinals this Wednesday, with the first legs to be completed on Thursday by the clash between Atlético de Madrid and FC Barcelona.
Albacete Balompié burst into the Copa del Rey quarter-finals alongside seven LaLiga heavyweights who between them boast 80 titles.
Rafael Louzán maintained an intense schedule of institutional activity in the city of Jeddah throughout the week of competition.
The FC Barcelona forward was selected by the technical staff of the Spanish national team as the standout player of the final.