BARCELONA, Spain -- Fermín López 's first Barcelona hat trick and a Marcus Rashford brace helped the Spanish champions hammer Olympiacos 6-1 on Tuesday in the UEFA Champions League to give Hansi Flick's side a dose of confidence ahead of Sunday's top-of-the-table Clásico clash against LaLiga leaders Real Madrid .

The scoreline flattered Barça in the end. Four of the goals came in the final 25 minutes after Olympiacos were reduced to 10 men, but Flick will clutch to the positives as he looks to extend Barça's winning run under his management against Madrid to five games this weekend.

And there were plenty of positives. Fermín returned from a muscle injury off the bench last week, but he was fit enough to start here and delivered a clinic in finishing. His second and thir

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