AS Roma defender Nicolas Burdisso insists a top four finish can still be achieved.

Roma are unbeaten in Serie A since the appointment of coach Vincenzo Montella.

"It was a great satisfaction to win this derby, and even more beautiful to have won five in a row," said Burdisso.

"Roma have given an important message to the league and it's a demonstration that we are always there to do better, to fight. We won't give up."

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