The Roma boss has revealed he is disappointed to see his side go down 3-1 to the Rossoneri.
Juventus’ Alessandro del Piero scored the only goal in their 1-0 win over the Serie A leaders, while Juventus’ Mario Mandzaukic and Andrea Barzagli each netted twice.
The first goal was a superb one from the Italian midfielder, who raced down the right and unleashed a thunderous strike into the far corner of the net from inside the penalty area.
The goal was his fourth of the season and he completed a brace of assists.
But the second goal came from the back.
Mandzaakic fired a low effort into the top corner from outside the penalty box.
Mancini had the home side well on their way for a 2-1 win over Sassuolo.
Mario Mandzaaksi scored twice in a 3-0 defeat to Sassuol, his first of the year.
Giovani dos Santos added a third goal for the hosts after 25 minutes, while Leonardo Bonucci added an extra goal after the break.
The Giallorossi are in a difficult situation and they have been without Marco Asensio for the past two matches, and they are yet to win in the league.
Mascosco’s men have been punished for their poor form in recent weeks, with the Nerazzurri failing to score in the last three matches, while they have conceded five goals in their last three away matches.
Mendes was also unhappy with his side’s defensive performance.
He was quoted as saying: “We have to do more to defend, we are not good enough at this.”
We cannot be complacent because this is the first time we’ve lost at home this season.
“But we will play better if we concentrate more.”
It is not good for our players to be out there playing football, to be up against an Italian team.