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Leganes players celebrate victory at the end of the Spanish league football match between FC Barcelona and Club Deportivo Leganes SAD at the Estadi Olimpic Lluis Companys in Barcelona on December 15, 2024. Leganes won 0-1. | AFP photo.

La Liga leaders Barcelona stumbled 1-0 at home against Leganes on Sunday as they suffered another blow in the Spanish title race.

Sergio Gonzalez headed home from a corner after four minutes for the visiting minnows and the Catalans missed a host of presentable chances as they failed to mount a comeback.