Iran Press/ Europe: Benzema slotted home in the 40th minute -- after Marco Asensio's shot had been palmed to Luka Modric by goalkeeper Unai Simon -- to put Madrid ahead.
Athletic had already spurned a series of first-half chances, and there was more wasteful finishing for the visitors after halftime as the home side managed to hold onto their narrow lead.
Madrid's victory in the rearranged matchday nine clashes left the league leaders on 36 points, with some breathing space ahead of second-placed Atletico Madrid and third-placed Real Sociedad, who they travel to on Saturday.
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