Thomas Tuchel has warned that Chelsea's risk losing more games if they do not improve following their disappointing start to the Premier League season.
The Blues have taken just seven points from their first five matches and have suffered surprise defeats away at Leeds and Southampton.
This is despite a record-breaking transfer window in Todd Boehly's first summer as owner, with the Blues spending £271million on new players.
'We need to step up,' Tuchel said. 'If we don't get tough, we will get punished. This is not what we want. We will show a reaction that we can do this.