Real Madrid are staring the end of the Carlo Ancelotti era in the face while Barcelona's season could come crashing down in the space of a week

A win wouldn't mathematically end Real's one-year reign atop La Liga, but it would signal its imminent demise.Then comes this match, and a seven-point lead with only three match days left would signal Barca's return to domestic dominance.

Can Barcelona extend its lead over Real Madrid in the LaLiga title race? Here's how to catch El Clásico action on ESPN.