Munich matchup rife with subplots

MUNICH, Germany - Bayern Munich hosts Real Madrid in Wednesday's tantalizing Champions League quarterfinal first leg, with Carlo Ancelotti's Bavarians looking to again be the Spaniards' bane.

And the subplots to the Allianz Arena clash are manifold.

Bayern boss Carlo Ancelotti coached Real to the 2014 Champions League crown and is up against his former assistant from that triumph, Madrid coach Zinedine Zidane.