5 Key Battles that will decide Real Madrid vs Bayern Munich

#1 Cristiano Ronaldo vs Niklas Sule

Ronaldo beats Sule to a ball, and hammers a lovely volley into the

goal;

but he'd controlled it with his bicep

Niklas Sule is a superb footballer in the making - big, impossibly strong, fast, a great reader of the game and an astute passer of the ball - and he's just 22. It seems almost unfair.

But that also leads us to the problem. While his physical attributes and footballing talents are unquestionable, his mental strength hasn't been tested yet, and under the lights at the Bernabeu, Cristiano Ronaldo has a tendency of finding, analyzing, and exploiting any weakness the opposition may have.

With Jerome Boateng injured, Sule is slated to start in the RCB role, putting him in direct opposition against the Champions League's greatest ever goalscorer... it's the kind of experience that can make a man.

Ronaldo had a rare off day in Munich, the first game all tournament that he's not scored in... and he's never more dangerous than when he's got a point to prove. Niklas Sule is in for a hell of a night.