Inter Milan goalkeeper Julio Cesar is at a loss to explain their form slide.

They have slipped down the Serie A standings after collecting just one point from the last 18 on offer.

"I feel helpless," the goalkeeper told the Gazzetta dello Sport. "The crisis at Inter is making me suffer a lot.

"After the defeat to Napoli on Sunday I didn't sleep at all. I would not wish this on my worst enemy."