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The Champions League semifinals are perhaps the most tactically fascinating matches in football -- the best club sides in the world competing over two legs. With no Barcelona and no Bayern Munich, this season's final four offer more tactical diversity than usual, and these could be two thrilling contests. Here's how each side might play to secure their place in Cardiff next month.
REAL MADRID vs. ATLETICO MADRID
Real Madrid: Use aerial threats
The absence of the injured Gareth Bale from Real Madrid's starting XI means their system will change slightly, but significantly.