BERLIN, April 24 (Xinhua) -- Borussia Dortmund continued Wednesday German treat as they thrashed Real Madrid 4-1 at home in the Champions League in Dortmund, Germany.

Polish striker Robert Lewandowski is the hero of the victory as he completed his four-goal spree one day after Bayern Munich crushed Barcelona 4-0 in the other semi-final first-leg match on Tuesday.

An all German final on May 25 seems unstoppable as the Spanish arch-rivals facing an almost impossible task in the return matches.