Sunderland midfielder Lee Cattermole has insisted that the team have already forgotten their victory over Chelsea as they try to retain their Premier League status.

The Black Cats shocked the league challengers at Stamford Bridge by securing a 2-1 win last Saturday.

"We had a celebration in the dressing room, but it probably lasted for about a minute and then we pulled ourselves back together and said, 'This isn't finished yet'," the Northern Echo quotes Cattermole as saying.

"As a group, I think we all recognised straight away that the hard work has to start here."

Sunderland are currently at the bottom of the relegation zone in the league table, three points away from safety with four games left to play.