Thomas Tuchel bemoaned the rhythm and freshness absent from his team as Chelsea crashed to a second successive defeat.
The European champions were beaten 1-0 in Turin on Wednesday, just four days after losing by the same score at home against Manchester City in the Premier League.
'Disappointed,' said Tuchel. 'We're all disappointed. It was the tough game we expected. You have to play with zero mistakes in midfield and take the risks in the right moment. To do this you need to be in rhythm, good decision-making.
'I didn't feel us fresh today, mentally.