After Tiago's header inside the 5-yard box, goalkeeper Iker Casillas was booed by his own fans with his every touch. The crowd is displeased by his below average performances this year.

Real Madrid fans were confident they could get a good result off city rivals Atletico, that's why watching the first goal go into their net wasn't pleasant for them to watch. After Tiago's header, fans blamed Iker Casillas for it, relentlessly booing the international keeper every time he touched the ball. 

The well-known ultras on the south side of the stadium tried to balance screaming received by their captain, but the rest of the stadium made it clear that Iker's last performances with Spain and Los Blancos have not been satisfying. 

This situation did not go unnoticed for fans on Twitter. Here you have the best reactions both in favor and against Madrid's captain:

"Casillas' face whenever an air ball approaches"