Chelsea defender Antonio Rudiger felt they showed the right type of quality to win at Fulham.
Reflecting on a second straight league win, Rudiger pinpointed their ability to deal with difficult circumstances as being integral to the outcome.
"A London derby presents its own challenges," he said.
"Although they are a team very low in the table, they tried and gave their all, their supporters were behind them, and there were some parts that were very dangerous. But we showed again that we can suffer.
"It was an important win. There are only 10 matches left and every one of them is a final. We started against Tottenham, we continued away now and it's good."