Midfielder Ki Sung-yueng says Swansea City's trip to his former club Sunderland could be made even tougher after the Black Cats' relegation.
The 28-year-old spent a season on loan at Sunderland, who secured their first win in 11 Premier League games against Hull.
The Swans are a point above the drop zone but Ki says pride will make Sunderland dangerous opponents.
"They won against Hull because they had no pressure," Ki said.
"They can enjoy their football. They try to win for their fans and for their pride.
"It's going to be a very difficult game against Sunderland and we have to be ready for that.