Napoli coach Maurizio Sarri was left stunned by their 3-0 defeat at Fiorentina on Sunday.

The Azzurri blew their title push as Kalidou Koulibaly saw red after just eight minutes in Florence and Giovanni Simeone went on to score a hat-trick.

“We lost our way when confronted with the adversities of the match. We lost our tactical confidence and after the opening goal, we lost our nerve too," Sarri told Sky Sport Italia.

“We tried to react, but lost our way as a group. Everyone tried to find the solution by themselves. We've always done well to react, but that didn't happen today."

Now the gap at the top of the table is four points with three rounds to go.

Sarri added: “It was a bad performance today, Fiorentina played very well. I don't know if that Juve result affected us, but if someone was thinking about that, then it means the overall approach was wrong. We can't lose energy on other teams.

“I saw a team today that from the very first minute was lost tactically. We reacted in a way that was not logical. We've got a lot to work on this week, as we have to analyse this defeat and figure out what happened."