Napoli kept up the pressure on Serie A leader Inter Milan as it finally got back to winning ways with a 2-1 victory over Fiorentina.
Romelu Lukaku on Sunday scored one and set up the other for Giacomo Raspadori to help Napoli move back to within a point of Inter, which fought back from two goals down to beat Monza 3-2 on Saturday.
Atalanta proved it is very much among the fray with a statement 4-0 win at fourth-placed Juventus to close the gap back to three points to Inter.
According to statistics provider Opta, it was the first time Juventus had lost a league match at home by four goals in nearly 60 years since a loss by the same score to Torino in October 1967.
Atalanta's title credentials will be truly tested next weekend when it hosts Inter.
Fiorentina's hopes of making it into the top four diminished after its fourth loss in five league matches.
Napoli also came into the match on a mediocre run, having drawn four of its past five matches and losing the other.
But the hosts