Chelsea manager Mauricio Pochettino was "angry and disappointed" by his side's 4-1 defeat at Newcastle United.
After encouraging performances against Tottenham Hotspur and Manchester City, Pochettino felt Chelsea were "soft in every challenge" at St James' Park.
"We didn't show that we were playing for something important," he said.
"Even if Newcastle weren't great, it was an easy win for them to prepare for the Champions League. We had to show that it's going to be difficult for them to play, to win the game and to beat us.