Chelsea head coach Graham Potter has warned his players to be ready for a fight against Leeds United.
The two clubs meet on Saturday afternoon in a huge Premier League clash.
Leeds are looking to avoid relegation, while Potter needs wins to save his job at Chelsea.
"That's always the approach," the Chelsea coach said when asked if his players will be confident.
"But sometimes these things happen. The Premier League is the best league in the world because anyone can beat anyone.
"The focus is on us being positive. We've been fighting this week to prepare well so we can give a performance our supporters are happy with.
"We know Leeds historically, since they've been in the Premier League, they have always played with that intensity. So that's something we have to deal with.
"Every team has a moment when it's difficult and moments when it's going well," he added.
"We have to keep working, stick together, and believe we can turn it around."