Chelsea coach Carlo Ancelotti will force his players to watch a video nasty of their Sunderland horror when they return from international duty.
Ancelotti labelled their 3-0 defeat as the worst in his time at the club. It was Chelsea's first defeat at home since last March, their heaviest loss at Stamford Bridge since a 3-0 defeat to Manchester United in 2002 and the worst against a non top-four side since 1995.
"We have to have a meeting about this on Thursday when they come back from the international break to look at what happened," Ancelotti said. "I think this was the worst performance since I've been here."
He added: "The performance was poor, but in football it can happen if you're not at your best and don't play with your best mentality.
"All the things were wrong. We didn't play how we wanted to, Sunderland showed fantastic spirit and played better. We were not able to come back into the game. It was a bad day. We were not able to play our football for 90 minutes, just 15 minutes in the first half."
John Terry has been carrying a recurring back problem for 12 games, but despite his absence and that of Alex and the suspended Michael Essien, Ancelotti remains confident that his squad is strong enough.
"Terry had control of this problem. He never missed a training session, but Saturday the pain was more, so he was not able to play," added Ancelotti,
"But I think he can play the next game. It is an injury, but he can control it. He has controlled it for 12 games. He's doing good prevention, good treatment. Everything will be okay for him.
"Sometimes we've had some players out in the past, some important players, and the team's played well. This was different. We were not able to play our football.
"I think the squad is strong enough. We maintain our position at the top of the table. We're not happy because, above all, at home we have to play with a different mentality. I hope we come back early and in the right way."
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