Sassuolo coach Alessio Dionisi says Juventus deserved their 3-0 win on Tuesday night.
Juve won via a double from Dusan Vlahovic and Fede Chiesa's goal.
Dionisi said: "Unfortunately, we were not accurate enough and surely made errors on the Juventus goals. Their third one really upset me. I am fed up with seeing similar mistakes.
"It's not the first time it has happened, and this has to stop. It changes nothing in terms of results, but it changes a lot in terms of mentality, self-esteem and analysis. It's an error we should not repeat.
We did create something but made mistakes, and Juventus didn't.
We didn't deserve a positive result and we didn't even deserve a heavy defeat either, but this happens when you make errors.
I believe we could have scored a goal or it could have finished 2-0 for them, but the third goal is all our fault. It's a heavy defeat, Juventus put in intensity and didn't concede much in the first half. We reacted in the second half, but it wasn't enough."