After Dani Carvajal's header from the right wasn't dealt with properly it fell to the Brazilian left back who fired a laser.
The ball was allowed to bounce by a number of defenders, as well as Cristiano Ronaldo who looked to attempt another bicycle kick.
But Marcelo made no mistake when it landed at his feet. His left footed effort flew low into the bottom corner with the keeper left helpless.
It's a crucial away goal that puts Real Madrid into the lead on aggregate.
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25 April 2018