Juventus defender Danilo says they fell short of standards in defeat to Champions League opponents Barcelona.
Barca won 2-0 in Turin for the first time in their history, with Mehri Demiral being sent off late for Juve.
“We were organised, but not aggressive, and that makes it difficult to play against a team like Barcelona," Danilo told Sky Sport Italia.
“So far, we've had some good moments, but we haven't played well for an entire match yet this season. We have to improve, take a step forward and be stronger mentally, be more determined in certain situations.
"That is very important against the stronger teams."