article_snippet: Two of Europe’s biggest games take place on Sunday, as the pre-eminent teams of England duel, before the grand two in Spain go head to head.
article_snippet: ENGLISH FOOTBALL’S BIGGEST GAME vs SPANISH FOOTBALL’S BIGGEST GAME .
highlights_snippet: Two of world football's biggest fixtures take place on Sunday .
  
highlights_snippet: Two fans take part in Q&A ahead of Sunday's El Clasico showdown .