After scoring 10 goals in their first two La Liga matches, Madrid entered the match with a perfect six points out of six. Mourinho's men fought for a key away victory in Croatia and looked to continue their fine start to the season.
With the Portuguese tactician resting Mesut Özil and Cristiano Ronaldo from the start, Madrid looked to former Ballon d'Or winner Kaká for creativity and invention in the final third.
Although Los Blancos were heavily favored heading into the weekend, Sami Khedira's sending off in the first half made it difficult for 10-man Madrid to unlock the well-organized Levante defense. Los Blancos struggled going forward and were unable to suppress the quick Levante counterattack.
Here are eight reasons why Mourinho should be concerned following Real Madrid's defeat to Levante.