Inter Milan coach Leonardo said his side struggled mentally in the 3-0 derby defeat to rivals AC Milan after going a goal down early.
An Alexandre Pato double made sure that Milan went five points clear at the top of the table, and Leonardo admitted that Inter never really recovered from his 42 second strike.
"I don't think we have surrendered, but five points in seven games is a lot. However, anything can happen," Leonardo said. "Their goal after one minute made our game plan jump, and for 20 minutes we just weren't there mentally.
"We tried to get back into the match and hoped for a better second half, but Cristian Chivu's dismissal conditioned our chances of recovering. We really struggled in front of goal and we couldn't find the space to create. There was little movement and no action."
Inter face Schalke on Tuesday in the Champions League and Leonardo added that he was keen to focus on that.
"Now we have to think about Schalke,'' he said. ''We have lots of positive things to look forward to, so let's do that. We take this defeat and dive into the Champions League now."