#1 Barcelona 5-0 Real Madrid, La Liga 2010/2011
For many Madridistas, the 5-0 defeat to Barcelona in 2010 was undeniably the most embarrassing, humiliating, and unforgivable performance in the glorified Madrid outfit's recent history.
The entire world tuned in to watch what many considered the two greatest managers in world football – Pep Guardiola and Jose Mourinho – do battle at the biggest clubs in the world. What occurred could only be described as complete and utter carnage from a Madrid perspective. The football on display from Barcelona on that night in November 2010 could be considered some of the greatest ever witnessed in club football.
La Masia graduates Xavi and Iniesta combined to give Barcelona the lead before Pedro doubled the home side's advantage before half-time. David Villa made it 3-0 with a typical Barcelona goal.
Moments later, Villa made it 4-0 before Jefferson made it 5-0 to seal the humiliation for not only Mourinho but the 110000 on-looking Real Madrid fans.